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Full vulnerability report · 2026
CVE-2026-20128High confidence

Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

Cisco · Catalyst SD-WAN Manager

Official source article: Cisco CISCO-SA-SDWAN-AUTHBP-QWCX8D4V ↗. Check the applicable product and release in the original source.

7.5HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2026-04-23 as the remediation due date.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 20 Apr 2026

Evidence used

  • CISA confirms exploitation in the wild.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 7.32% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Cisco Catalyst SD-WAN Manager and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-8676

CISA KEV mirrored by ENISA

A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 20 Apr 2026. Evidence sources: cisa_kev.
ENISA score
7.5 · CVSS 3.1
Advisory evidence
3 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_ncscnl · NCSC-2026-0071Kwetsbaarheden verholpen in Cisco Catalyst SD-WAN Manager
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2026-04-23 as the remediation due date.

Patch available
01

What, why and how

Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user.

What

Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user.

Why

The storage of passwords in a recoverable format makes them subject to password reuse attacks by malicious users. In fact, it should be noted that recoverable encrypted passwords provide no significant benefit over plaintext passwords since they are subject not only to reuse by malicious attackers but also by malicious insiders. If a system administrator can recover a password directly, or use a brute force search on the available information, the administrator can use the password on other accounts.

How

An attacker operating through local access may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user.

Why

The storage of passwords in a recoverable format makes them subject to password reuse attacks by malicious users. In fact, it should be noted that recoverable encrypted passwords provide no significant benefit over plaintext passwords since they are subject not only to reuse by malicious attackers but also by malicious insiders. If a system administrator can recover a password directly, or use a brute force search on the available information, the administrator can use the password on other accounts.

How

An attacker operating through local access may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2026-04-20.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Storing Passwords in a Recoverable Format → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-257 ↗

CWE-257: Storing Passwords in a Recoverable Format. The storage of passwords in a recoverable format makes them subject to password reuse attacks by malicious users. In fact, it should be noted that recoverable encrypted passwords provide no significant benefit over plaintext passwords since they are subject not only to reuse by malicious attackers but also by malicious insiders. If a system administrator can recover a password directly, or use a brute force search on the available information, the administrator can use the password on other accounts.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
CWE-257CISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-8676Known-exploited evidence recorded

A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.

Official EUVD record ↗
BSI · German · WID-SEC-2026-0516Cisco Catalyst SD-WAN Manager und SD-WAN Controller: Mehrere Schwachstellen

Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in Cisco Catalyst SD-WAN Manager ausnutzen, um Administratorrechte zu erlangen, die Authentifizierung zu umgehen, Befehle mit Netadmin-Rechten auszuführen, sensible Systeminformationen zu lesen und beliebige Dateien auf dem System zu überschreiben.

Official advisory ↗
Canadian Centre for Cyber Security · English · AL26-012AL26-012 - Critical vulnerability affecting Cisco Catalyst SD-WAN - CVE-2026-20182

An Alert is used to raise awareness of a recently identified cyber threat that may impact cyber information assets, and to provide additional detection and mitigation advice to recipients. The Canadian Centre for Cyber Security ("Cyber Centre") is also available to provide additional assistance regarding the content of this Alert to recipients as requested.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV26-166Cisco security advisory (AV26-166) – Update 3

On February 25, 2026, Cisco published security advisories to address critical vulnerabilities in the following products: Cisco has indicated that CVE-2026-20127 has been exploited.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260304Security Bulletin 4 Mar 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 4 Mar 2026, published on 4 March 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0210Multiples vulnérabilités dans Cisco Catalyst SD-WAN

De multiples vulnérabilités ont été découvertes dans Cisco Catalyst SD-WAN. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et une atteinte à la confidentialité des données. Cisco indique que la vulnérabilité CVE-2026-20127 est activement exploitée.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-006163シスコシステムズのCisco Catalyst SD-WAN Managerにおける復元可能な形式でのパスワード保存に関する脆弱性

Cisco Catalyst SD-WAN ManagerのData Collection Agent（DCA）機能に脆弱性があり、認証されたローカル攻撃者が影響を受けるシステム上でDCAユーザー権限を取得できる可能性があります。この脆弱性を悪用するには、攻撃者が影響を受けるシステム上で有効なvManageの認証情報を持っている必要があります。この脆弱性は、影響を受けるシステム上にDCAユーザーの認証情報ファイルが存在することに起因しています。攻撃者は低権限ユーザーとしてファイルシステムにアクセスし、そのシステムからDCAのパスワードを含むファイルを読み取ることで、この脆弱性を悪用できます。攻撃が成功すると、攻撃者は別の影響を受けるシステムにアクセスし、DCAユーザー権限を取得できます。なお、Cisco Catalyst SD-WAN Managerの20.18以降のリリースはこの脆弱性の影響を受けません。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6764美 CISA 발표 주요 Exploit 정보공유(Update. 2026-04-20)

Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6714Cisco 제품 보안 업데이트 권고

Cisco Catalyst SD-WAN Manager에서 발생하는 정보 유출 취약점(CVE-2026-20128) [8][18]

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0071Kwetsbaarheden verholpen in Cisco Catalyst SD-WAN Manager

De kwetsbaarheden bevinden zich in de peering authenticatiemechanismen van de Cisco Catalyst SD-WAN Controller en Manager producten. Deze kwetsbaarheden stellen een niet-geauthenticeerde externe aanvaller in staat om het authenticatieproces te omzeilen, waardoor administratieve privileges op de getroffen systemen kunnen worden verkregen. Daarnaast kunnen aanvallers root-level privileges verkrijgen, wat kan leiden tot ongeautoriseerde toegang tot gevoelige informatie en de mogelijkheid om willekeurige bestanden te overschrijven, wat kan resulteren in verdere exploitatie of systeeminstabiliteit. De meest ernstige kwetsbaarheid, met kenmerk CVE-2026-20127, kan door een ongeauthenticeerde kwaadwillende worden misbruikt om op afstand willekeurige code uit te voeren met hoge administratieve rechten. Cisco geeft aan dat actief misbruik van deze kwetsbaarheid bekend is. Na misbruik van deze kwetsbaarheid zou de kwaadwillende de kwetsbaarheid met kenmerk CVE-2022-20775 gebruiken om de rechten te escaleren tot root. Dit doet de actor door het systeem te downgraden naar een versie waarin CVE-2022-20775 niet verholpen is, de rechten middels deze kwetsbaarheid te verhogen naar root en vervolgens het systeem weer terug te zetten in de oorspronkelijke versie. Er is publieke Proof-of-Concept-code (PoC) verschenen die de kwetsbaarheid met kenmerk CVE-2026-20127 aantoont en mogelijk misbruikt. De kans op grootschalig misbruik neemt hierdoor toe en het NCSC verwacht een significante toename in scan- en misbruikverkeer. Het NCSC adviseert met klem de update zo spoedig mogelijk te installeren. Ook van de kwetsbaarheden met kenmerk CVE-2026-20122 en CVE-2026-20128 meldt Cisco berichten te ontvangen dat deze actief worden misbruikt. Voor deze kwetsbaarheden is (nog) geen publieke Proof-of-Concept-code of exploit beschikbaar.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Cisco Catalyst SD-WAN Manager: 18.3.0, 20.3.4.0.19, 20.3.4.0.24, 20.4.2.2.1, 20.5.1.0.2, 18.4.303, 17.2.5, 20.3.8, 20.3.4.2.2, 18.4.1, 19.2.1, 20.5.1, 20.6.2.2, 18.3.5, 20.4.2.2.4, 20.7.1EFT2, 20.9.1EFT2, 18.3.8, 20.1.3.1, 18.3.3.1, 20.3.4.3, 20.3.3.0.16, 18.3.6, 18.3.7, 17.2.8, 20.3.2.1, 20.5.1.2, 20.3.6, 19.2.3, 18.3.4, 20.4.2.3, 17.2.10, 19.2.099, 20.1.1.1, 20.3.3.0.4, 20.3.4.1, 20.3.4.0.20, 20.6.2.2.4, 20.3.3.0.2, 17.2.6, 20.4.1.0.1, 18.4.4, 20.3.4.0.11, 20.3.3.1.5, 17.2.7, 20.6.1.1, 19.2.097, 20.1.2, 19.0.0, 20.3.5.1, 20.3.814, 20.3.4.0.6, 20.3.3.1.7, 18.4.302, 20.6.5.1.4, 18.4.0, 19.1.0, 19.2.4, 20.4.1.0.02, 20.1.12, 19.2.31, 18.3.1.1, 18.2.0, 20.4.2.2, 20.3.4, 18.4.6, 20.3.3, 20.4.2, 20.3.7, 20.3.813, 18.3.6.1, 20.6.2.1, 20.5.0.1.1, 20.3.2.0.5, 19.2.4.0.8, 19.0.1a, 20.4.1.2, 20.1.1, 20.3.5.0.9, 20.3.2.1_927, 20.1.3, 19.2.4.0.9, 20.3.2_929, 20.6.2.0.4, 20.3.4.0.1, 20.3.4.1.2, 17.2.9, 20.3.2.1_930, 20.3.4.0.25, 20.3.4.2.1, 19.2.929, 20.3.1, 20.4.1.1, 20.3.3.0.14, 20.3.2_937, 20.3.4.0.9, 18.3.3, 19.2.098, 26.1.1, 20.4.2.2.2, 20.6.2.2.7, 20.3.3.0.18, 20.6.0.18.4, 20.3.7.1, 18.4.501_ES, 20.4.1.1.5, 18.4.3, 20.3.2_928, 18.3.1, 20.6.3.0.2, 18.4.0.1, 20.12.501, 20.4.2.0.2, 19.2.2, 20.3.4.1.1, 20.3.5.0.8, 20.3.3.0.8, 20.6.2.2.3, 20.4.2.1, 19.2.0, 20.3.3.1.1, 19.2.32, 20.3.3.1.10, 20.6.1.2, 20.6.0.18.3, 20.4.2.1.1, 19.3.0, 18.4.5, 20.3.5.0.7, 20.5.1.0.1, 20.3.3.1.2, 19.2.4.0.1, 20.3.3.2, 20.3.2, 20.6.1.0.1, 20.3.2.0.6
Fixed
The Cyber Centre recommends that organizations upgrade affected Cisco Catalyst SD-WAN instances to a fixed version: Affected product Affected version Solution Cisco Catalyst SD-WAN Earlier than 20.9 * Migrate to a fixed release. Cisco Catalyst SD-WAN 20.9 20.9.9.1 Cisco Catalyst SD-WAN 20.10 20.12.7.1 Cisco Catalyst SD-WAN 20.11 * 20.12.7.1 Cisco Catalyst SD-WAN 20.12 20.12.5.4 20.12.6.2 20.12.7.1 Cisco Catalyst SD-WAN 20.13 * 20.15.5.2 Cisco Catalyst SD-WAN 20.14 * 20.15.5.2 Cisco Catalyst SD-WAN 20.15 20.15.4.4 20.15.5.2 Cisco Catalyst SD-WAN 20.16 * 20.18.2.2 Cisco Catalyst SD-WAN 20.18 * 20.18.2.2 Cisco Catalyst SD-WAN 26.1 26.1.1.1 Cisco has also addressed this vulnerability in Cisco SD-WAN Cloud (Cisco Managed) Release 20.15.506, which is cloud based. No user action is required. Customers can determine the current remediation status or software version by using the Help function in the service GUI Footnote 4 . The Cyber Centre also recommends organizations to: Review the Cisco advisory Footnote 4 and the Talos Intelligence article Footnote 1 to identify if indicators of compromise are present on their devices. Cisco states to preserve possible indicators of compromise, customers should issue the request admin-tech command from each of the control components in the SD-WAN deployment before upgrading Footnote 4 Footnote 10 . Collect artifacts, including virtual snapshots and logs from SD-WAN technology. Fully patch SD-WAN technology including those that are affected by CVE-2026-20182. Implement recommendations from the Cisco SD-WAN hardening guide Footnote 11 . In addition, the Cyber Centre strongly recommends that organizations review and implement the Cyber Centre’s Top 10 IT Security Actions with an emphasis on the following topics Footnote 12 . Consolidating, monitoring, and defending Internet gateways Patch operating systems and applications Harden operating systems and applications Isolate web-facing applications Should activity matching the content of this alert be discovered, recipients are encouraged to report via My Cyber Portal or email contact@cyber.gc.ca .
Action
Apply the fixed release for the affected product branch as recorded by Canadian Centre for Cyber Security. Validate the exact product and build in the linked advisory before deployment.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
Official vendor articles1 stored document

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

  • Cisco Catalyst SD-WAN Vulnerabilities →Original publisher ↗Searchable text snapshot · Captured 18 Oct 2026Home / Cisco Security / Security Advisories Cisco Security Advisory Cisco Catalyst SD-WAN Vulnerabilities Cisco Catalyst SD-WAN Vulnerabilities --> Cisco Security Advisory Cisco Catalyst SD-WAN Vulnerabilities Critical Advisory ID: cisco-sa-sdwan-authbp-qwCX8D4v First Published: 2026 February 25 16:00 GMT Last Upd
04

Evidence and provenance

Published 25 Feb 2026 · Last source change 21 Apr 2026, 03:55 UTC · CWE-257 · Storing Passwords in a Recoverable Format

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-8676
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.3.0, 19.2.2, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 18.3.8, 19.0.0, 19.1.0, 18.4.302, 18.4.303, 19.2.097, 19.2.098, 17.2.10, 18.3.6.1, 19.0.1a, 18.2.0, 18.4.3, 18.4.1, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 18.3.4, 17.2.5, 18.3.1.1, 18.3.5, 18.4.0.1, 18.3.3, 17.2.7, 18.3.0, 19.2.3, 18.4.501_ES, 20.3.1, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.32, 20.3.2.1, 20.3.2.1_927, 18.4.6, 20.3.2_928, 20.3.2_929, 20.4.1.0.1, 20.3.2.1_930, 19.2.4, 20.5.0.1.1, 20.4.1.1, 20.3.3, 19.2.4.0.1, 20.3.2_937, 20.5.1, 20.1.3, 20.3.3.0.4, 20.3.3.1.2, 20.3.3.1.1, 20.4.1.2, 20.3.3.0.2, 20.4.1.1.5, 20.4.1.0.02, 20.3.3.1.7, 20.3.3.1.5, 20.5.1.0.1, 20.3.3.1.10, 20.3.3.0.8, 20.4.2, 20.3.4, 20.3.3.0.14, 19.2.4.0.8, 19.2.4.0.9, 20.3.4.0.1, 20.3.2.0.5, 20.5.1.0.2, 20.6.1.1, 20.6.0.18.3, 20.3.2.0.6, 20.6.0.18.4, 20.4.2.0.2, 20.3.3.0.16, 20.6.1.0.1, 20.3.4.0.6, 20.7.1EFT2, 20.3.4.0.9, 20.3.4.0.11, 20.3.3.0.18, 20.6.2.1, 20.3.4.1, 20.4.2.1, 20.4.2.1.1, 20.3.4.1.1, 20.3.813, 20.3.4.0.19, 20.4.2.2.1, 20.5.1.2, 20.3.814, 20.4.2.2, 20.6.2.2, 20.3.4.2.1, 20.3.4.1.2, 20.3.4.0.20, 20.6.2.2.3, 20.4.2.2.2, 20.6.2.0.4, 20.3.4.0.24, 20.6.2.2.7, 20.3.4.2.2, 20.4.2.2.4, 20.3.5.0.8, 20.3.5.0.9, 20.3.5.0.7, 20.6.3.0.2, 20.9.1EFT2, 20.3.6, 20.3.7, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.3.3.2, 20.3.7.1, 20.3.4.0.25, 20.6.2.2.4, 20.6.1.2, 20.1.3.1, 20.6.5.1.4, 20.3.8, 20.12.501, 26.1.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.3.0, 19.2.2, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 18.3.8, 19.0.0, 19.1.0, 18.4.302, 18.4.303, 19.2.097, 19.2.098, 17.2.10, 18.3.6.1, 19.0.1a, 18.2.0, 18.4.3, 18.4.1, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 18.3.4, 17.2.5, 18.3.1.1, 18.3.5, 18.4.0.1, 18.3.3, 17.2.7, 18.3.0, 19.2.3, 18.4.501_ES, 20.3.1, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.32, 20.3.2.1, 20.3.2.1_927, 18.4.6, 20.3.2_928, 20.3.2_929, 20.4.1.0.1, 20.3.2.1_930, 19.2.4, 20.5.0.1.1, 20.4.1.1, 20.3.3, 19.2.4.0.1, 20.3.2_937, 20.5.1, 20.1.3, 20.3.3.0.4, 20.3.3.1.2, 20.3.3.1.1, 20.4.1.2, 20.3.3.0.2, 20.4.1.1.5, 20.4.1.0.02, 20.3.3.1.7, 20.3.3.1.5, 20.5.1.0.1, 20.3.3.1.10, 20.3.3.0.8, 20.4.2, 20.3.4, 20.3.3.0.14, 19.2.4.0.8, 19.2.4.0.9, 20.3.4.0.1, 20.3.2.0.5, 20.5.1.0.2, 20.6.1.1, 20.6.0.18.3, 20.3.2.0.6, 20.6.0.18.4, 20.4.2.0.2, 20.3.3.0.16, 20.6.1.0.1, 20.3.4.0.6, 20.7.1EFT2, 20.3.4.0.9, 20.3.4.0.11, 20.3.3.0.18, 20.6.2.1, 20.3.4.1, 20.4.2.1, 20.4.2.1.1, 20.3.4.1.1, 20.3.813, 20.3.4.0.19, 20.4.2.2.1, 20.5.1.2, 20.3.814, 20.4.2.2, 20.6.2.2, 20.3.4.2.1, 20.3.4.1.2, 20.3.4.0.20, 20.6.2.2.3, 20.4.2.2.2, 20.6.2.0.4, 20.3.4.0.24, 20.6.2.2.7, 20.3.4.2.2, 20.4.2.2.4, 20.3.5.0.8, 20.3.5.0.9, 20.3.5.0.7, 20.6.3.0.2, 20.9.1EFT2, 20.3.6, 20.3.7, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.3.3.2, 20.3.7.1, 20.3.4.0.25, 20.6.2.2.4, 20.6.1.2, 20.1.3.1, 20.6.5.1.4, 20.3.8, 20.12.501, 26.1.1 · Fixed: The Cyber Centre recommends that organizations upgrade affected Cisco Catalyst SD-WAN instances to a fixed version: Affected product Affected version Solution Cisco Catalyst SD-WAN Earlier than 20.9 * Migrate to a fixed release. Cisco Catalyst SD-WAN 20.9 20.9.9.1 Cisco Catalyst SD-WAN 20.10 20.12.7.1 Cisco Catalyst SD-WAN 20.11 * 20.12.7.1 Cisco Catalyst SD-WAN 20.12 20.12.5.4 20.12.6.2 20.12.7.1 Cisco Catalyst SD-WAN 20.13 * 20.15.5.2 Cisco Catalyst SD-WAN 20.14 * 20.15.5.2 Cisco Catalyst SD-WAN 20.15 20.15.4.4 20.15.5.2 Cisco Catalyst SD-WAN 20.16 * 20.18.2.2 Cisco Catalyst SD-WAN 20.18 * 20.18.2.2 Cisco Catalyst SD-WAN 26.1 26.1.1.1 Cisco has also addressed this vulnerability in Cisco SD-WAN Cloud (Cisco Managed) Release 20.15.506, which is cloud based. No user action is required. Customers can determine the current remediation status or software version by using the Help function in the service GUI Footnote 4 . The Cyber Centre also recommends organizations to: Review the Cisco advisory Footnote 4 and the Talos Intelligence article Footnote 1 to identify if indicators of compromise are present on their devices. Cisco states to preserve possible indicators of compromise, customers should issue the request admin-tech command from each of the control components in the SD-WAN deployment before upgrading Footnote 4 Footnote 10 . Collect artifacts, including virtual snapshots and logs from SD-WAN technology. Fully patch SD-WAN technology including those that are affected by CVE-2026-20182. Implement recommendations from the Cisco SD-WAN hardening guide Footnote 11 . In addition, the Cyber Centre strongly recommends that organizations review and implement the Cyber Centre’s Top 10 IT Security Actions with an emphasis on the following topics Footnote 12 . Consolidating, monitoring, and defending Internet gateways Patch operating systems and applications Harden operating systems and applications Isolate web-facing applications Should activity matching the content of this alert be discovered, recipients are encouraged to report via My Cyber Portal or email contact@cyber.gc.ca .
    Canadian Centre for Cyber Security ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Canadian Centre for Cyber Security ↗
  4. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: cyber.gc.ca/al26-012-critical-vulnerability-affecting-cisco-catalyst-sd-wan-cve-2026-20182.
    Before
    remediation: cyber.gc.ca/al26-012-critical-vulnerability-affecting-cisco-catalyst-sd-wan-cve-2026-20182 · vendor advisory: sec.cloudapps.cisco.com/cisco-sa-sdwan-authbp-qwCX8D4v
    After
    vendor advisory: sec.cloudapps.cisco.com/cisco-sa-sdwan-authbp-qwCX8D4v
    psirt@cisco.com ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.3.0, 19.2.2, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 18.3.8, 19.0.0, 19.1.0, 18.4.302, 18.4.303, 19.2.097, 19.2.098, 17.2.10, 18.3.6.1, 19.0.1a, 18.2.0, 18.4.3, 18.4.1, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 18.3.4, 17.2.5, 18.3.1.1, 18.3.5, 18.4.0.1, 18.3.3, 17.2.7, 18.3.0, 19.2.3, 18.4.501_ES, 20.3.1, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.32, 20.3.2.1, 20.3.2.1_927, 18.4.6, 20.3.2_928, 20.3.2_929, 20.4.1.0.1, 20.3.2.1_930, 19.2.4, 20.5.0.1.1, 20.4.1.1, 20.3.3, 19.2.4.0.1, 20.3.2_937, 20.5.1, 20.1.3, 20.3.3.0.4, 20.3.3.1.2, 20.3.3.1.1, 20.4.1.2, 20.3.3.0.2, 20.4.1.1.5, 20.4.1.0.02, 20.3.3.1.7, 20.3.3.1.5, 20.5.1.0.1, 20.3.3.1.10, 20.3.3.0.8, 20.4.2, 20.3.4, 20.3.3.0.14, 19.2.4.0.8, 19.2.4.0.9, 20.3.4.0.1, 20.3.2.0.5, 20.5.1.0.2, 20.6.1.1, 20.6.0.18.3, 20.3.2.0.6, 20.6.0.18.4, 20.4.2.0.2, 20.3.3.0.16, 20.6.1.0.1, 20.3.4.0.6, 20.7.1EFT2, 20.3.4.0.9, 20.3.4.0.11, 20.3.3.0.18, 20.6.2.1, 20.3.4.1, 20.4.2.1, 20.4.2.1.1, 20.3.4.1.1, 20.3.813, 20.3.4.0.19, 20.4.2.2.1, 20.5.1.2, 20.3.814, 20.4.2.2, 20.6.2.2, 20.3.4.2.1, 20.3.4.1.2, 20.3.4.0.20, 20.6.2.2.3, 20.4.2.2.2, 20.6.2.0.4, 20.3.4.0.24, 20.6.2.2.7, 20.3.4.2.2, 20.4.2.2.4, 20.3.5.0.8, 20.3.5.0.9, 20.3.5.0.7, 20.6.3.0.2, 20.9.1EFT2, 20.3.6, 20.3.7, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.3.3.2, 20.3.7.1, 20.3.4.0.25, 20.6.2.2.4, 20.6.1.2, 20.1.3.1, 20.6.5.1.4, 20.3.8, 20.12.501, 26.1.1 · Fixed: The Cyber Centre recommends that organizations upgrade affected Cisco Catalyst SD-WAN instances to a fixed version: Affected product Affected version Solution Cisco Catalyst SD-WAN Earlier than 20.9 * Migrate to a fixed release. Cisco Catalyst SD-WAN 20.9 20.9.9.1 Cisco Catalyst SD-WAN 20.10 20.12.7.1 Cisco Catalyst SD-WAN 20.11 * 20.12.7.1 Cisco Catalyst SD-WAN 20.12 20.12.5.4 20.12.6.2 20.12.7.1 Cisco Catalyst SD-WAN 20.13 * 20.15.5.2 Cisco Catalyst SD-WAN 20.14 * 20.15.5.2 Cisco Catalyst SD-WAN 20.15 20.15.4.4 20.15.5.2 Cisco Catalyst SD-WAN 20.16 * 20.18.2.2 Cisco Catalyst SD-WAN 20.18 * 20.18.2.2 Cisco Catalyst SD-WAN 26.1 26.1.1.1 Cisco has also addressed this vulnerability in Cisco SD-WAN Cloud (Cisco Managed) Release 20.15.506, which is cloud based. No user action is required. Customers can determine the current remediation status or software version by using the Help function in the service GUI Footnote 4 . The Cyber Centre also recommends organizations to: Review the Cisco advisory Footnote 4 and the Talos Intelligence article Footnote 1 to identify if indicators of compromise are present on their devices. Cisco states to preserve possible indicators of compromise, customers should issue the request admin-tech command from each of the control components in the SD-WAN deployment before upgrading Footnote 4 Footnote 10 . Collect artifacts, including virtual snapshots and logs from SD-WAN technology. Fully patch SD-WAN technology including those that are affected by CVE-2026-20182. Implement recommendations from the Cisco SD-WAN hardening guide Footnote 11 . In addition, the Cyber Centre strongly recommends that organizations review and implement the Cyber Centre’s Top 10 IT Security Actions with an emphasis on the following topics Footnote 12 . Consolidating, monitoring, and defending Internet gateways Patch operating systems and applications Harden operating systems and applications Isolate web-facing applications Should activity matching the content of this alert be discovered, recipients are encouraged to report via My Cyber Portal or email contact@cyber.gc.ca .
    After
    Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.3.0, 19.2.2, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 18.3.8, 19.0.0, 19.1.0, 18.4.302, 18.4.303, 19.2.097, 19.2.098, 17.2.10, 18.3.6.1, 19.0.1a, 18.2.0, 18.4.3, 18.4.1, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 18.3.4, 17.2.5, 18.3.1.1, 18.3.5, 18.4.0.1, 18.3.3, 17.2.7, 18.3.0, 19.2.3, 18.4.501_ES, 20.3.1, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.32, 20.3.2.1, 20.3.2.1_927, 18.4.6, 20.3.2_928, 20.3.2_929, 20.4.1.0.1, 20.3.2.1_930, 19.2.4, 20.5.0.1.1, 20.4.1.1, 20.3.3, 19.2.4.0.1, 20.3.2_937, 20.5.1, 20.1.3, 20.3.3.0.4, 20.3.3.1.2, 20.3.3.1.1, 20.4.1.2, 20.3.3.0.2, 20.4.1.1.5, 20.4.1.0.02, 20.3.3.1.7, 20.3.3.1.5, 20.5.1.0.1, 20.3.3.1.10, 20.3.3.0.8, 20.4.2, 20.3.4, 20.3.3.0.14, 19.2.4.0.8, 19.2.4.0.9, 20.3.4.0.1, 20.3.2.0.5, 20.5.1.0.2, 20.6.1.1, 20.6.0.18.3, 20.3.2.0.6, 20.6.0.18.4, 20.4.2.0.2, 20.3.3.0.16, 20.6.1.0.1, 20.3.4.0.6, 20.7.1EFT2, 20.3.4.0.9, 20.3.4.0.11, 20.3.3.0.18, 20.6.2.1, 20.3.4.1, 20.4.2.1, 20.4.2.1.1, 20.3.4.1.1, 20.3.813, 20.3.4.0.19, 20.4.2.2.1, 20.5.1.2, 20.3.814, 20.4.2.2, 20.6.2.2, 20.3.4.2.1, 20.3.4.1.2, 20.3.4.0.20, 20.6.2.2.3, 20.4.2.2.2, 20.6.2.0.4, 20.3.4.0.24, 20.6.2.2.7, 20.3.4.2.2, 20.4.2.2.4, 20.3.5.0.8, 20.3.5.0.9, 20.3.5.0.7, 20.6.3.0.2, 20.9.1EFT2, 20.3.6, 20.3.7, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.3.3.2, 20.3.7.1, 20.3.4.0.25, 20.6.2.2.4, 20.6.1.2, 20.1.3.1, 20.6.5.1.4, 20.3.8, 20.12.501, 26.1.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CISA KEV ↗
  6. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    psirt@cisco.com ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    20.1.12; 19.2.1; 18.4.4; 18.4.5; 20.1.1.1; 20.1.1; 19.3.0; 19.2.2 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.3.0, 19.2.2, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 18.3.8, 19.0.0, 19.1.0, 18.4.302, 18.4.303, 19.2.097, 19.2.098, 17.2.10, 18.3.6.1, 19.0.1a, 18.2.0, 18.4.3, 18.4.1, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 18.3.4, 17.2.5, 18.3.1.1, 18.3.5, 18.4.0.1, 18.3.3, 17.2.7, 18.3.0, 19.2.3, 18.4.501_ES, 20.3.1, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.32, 20.3.2.1, 20.3.2.1_927, 18.4.6, 20.3.2_928, 20.3.2_929, 20.4.1.0.1, 20.3.2.1_930, 19.2.4, 20.5.0.1.1, 20.4.1.1, 20.3.3, 19.2.4.0.1, 20.3.2_937, 20.5.1, 20.1.3, 20.3.3.0.4, 20.3.3.1.2, 20.3.3.1.1, 20.4.1.2, 20.3.3.0.2, 20.4.1.1.5, 20.4.1.0.02, 20.3.3.1.7, 20.3.3.1.5, 20.5.1.0.1, 20.3.3.1.10, 20.3.3.0.8, 20.4.2, 20.3.4, 20.3.3.0.14, 19.2.4.0.8, 19.2.4.0.9, 20.3.4.0.1, 20.3.2.0.5, 20.5.1.0.2, 20.6.1.1, 20.6.0.18.3, 20.3.2.0.6, 20.6.0.18.4, 20.4.2.0.2, 20.3.3.0.16, 20.6.1.0.1, 20.3.4.0.6, 20.7.1EFT2, 20.3.4.0.9, 20.3.4.0.11, 20.3.3.0.18, 20.6.2.1, 20.3.4.1, 20.4.2.1, 20.4.2.1.1, 20.3.4.1.1, 20.3.813, 20.3.4.0.19, 20.4.2.2.1, 20.5.1.2, 20.3.814, 20.4.2.2, 20.6.2.2, 20.3.4.2.1, 20.3.4.1.2, 20.3.4.0.20, 20.6.2.2.3, 20.4.2.2.2, 20.6.2.0.4, 20.3.4.0.24, 20.6.2.2.7, 20.3.4.2.2, 20.4.2.2.4, 20.3.5.0.8, 20.3.5.0.9, 20.3.5.0.7, 20.6.3.0.2, 20.9.1EFT2, 20.3.6, 20.3.7, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.3.3.2, 20.3.7.1, 20.3.4.0.25, 20.6.2.2.4, 20.6.1.2, 20.1.3.1, 20.6.5.1.4, 20.3.8, 20.12.501, 26.1.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-8676↗Canadian Centre for Cyber Security remediation guidance↗CISA KEV record↗CVE authority or vendor reference · Cisco CISCO-SA-SDWAN-AUTHBP-QWCX8D4V↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-20128 · cve.blacktree.nl