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Full vulnerability report · 2026
CVE-2026-20182High confidence

Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Cisco · Catalyst SD-WAN

Official source article: Cisco CISCO-SA-SDWAN-RPA2-V69WY2SW ↗. Check the applicable product and release in the original source.

10.0CriticalCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2026-05-17 as the remediation due date.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • CISA confirms exploitation in the wild.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 91.82% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • 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 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-2026-30324

CISA KEV mirrored by ENISA

May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The section of this advisory includes Show Control Connections guidance to help with system checks.  A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to the affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 14 May 2026. Evidence sources: cisa_kev.
ENISA score
10.0 · CVSS 3.1
Advisory evidence
2 linked advisory records
Explicit mitigation evidence

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

  • csaf_ncscnl · NCSC-2026-0157Kwetsbaarheden verholpen in Cisco Catalyst SD-WAN Controller en Manager
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2026-05-17 as the remediation due date.

Patch available
01

What, why and how

Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.

What

Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.

What

Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.

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 2026-05-14.

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
a network path → Improper Authentication → bypass an access boundary or take over an account
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-287 ↗

CWE-287: Improper Authentication. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing 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.
NetworkUnauthenticatedCWE-287CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-30324Known-exploited evidence recorded

May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The section of this advisory includes Show Control Connections guidance to help with system checks.  A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to the affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.

Official EUVD record ↗
BSI · German · WID-SEC-2026-1534Cisco Catalyst SD-WAN Controller: Schwachstelle ermöglicht Erlangen von Administratorrechten

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Catalyst SD-WAN Controller ausnutzen, um Administratorrechte zu erlangen und so die Netzwerkkonfiguration für die SD-WAN-Struktur zu manipulieren.

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 · AV26-471Cisco security advisory (AV26-471)

On May 14, 2026, Cisco published security advisories to address critical vulnerabilities in the following products: Cisco is aware of limited exploitation of CVE-2026-20182.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260520Security Bulletin 20 May 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 20 May 2026, published on 20 May 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0594Multiples vulnérabilités dans les produits Cisco

De multiples vulnérabilités ont été découvertes dans les produits Cisco. Elles permettent à un attaquant de provoquer une élévation de privilèges, une atteinte à la confidentialité des données et un contournement de la politique de sécurité. Cisco indique que la vulnérabilité CVE-2026-20182 est activement exploitée.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-016006シスコシステムズのCisco Catalyst SD-WAN Manager等の複数製品における認証に関する脆弱性

2026年5月: 本セキュリティアドバイザリは、2026年2月に公表された後に発見および修正された脆弱性の詳細と修正情報を提供します。本アドバイザリは、コントロール接続のハンドシェイクにおける新たな脆弱性に関する内容です。本アドバイザリのセクションには、システムチェックを支援するためのコントロール接続表示に関するガイダンスを含みます。Cisco Catalyst SD-WAN Controller（旧称 SD-WAN vSmart）および Cisco Catalyst SD-WAN Manager（旧称 SD-WAN vManage）のピアリング認証に存在する脆弱性により、認証されていないリモート攻撃者が認証を回避し、影響を受けるシステムで管理者権限を取得する可能性があります。この脆弱性は、影響を受けるシステムのピアリング認証メカニズムが正しく機能していないために存在します。攻撃者は細工されたリクエストを影響を受けるシステムに送信することで、この脆弱性を悪用できます。成功した攻撃により、攻撃者は影響を受ける Cisco Catalyst SD-WAN Controller に内部の高権限だがrootではないユーザーアカウントとしてログインできるようになります。このアカウントを使用することで攻撃者はNETCONFにアクセスでき、それによりSD-WANファブリックのネットワーク設定を操作できます。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6796Cisco 제품 보안 업데이트 권고

Cisco Catalyst SD-WAN Controller 및 Cisco Catalyst SD-WAN Manager에서 발생하는 Improper Authentication 취약점(CVE-2026-20182) [1][2]

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6789美 CISA 발표 주요 Exploit 정보공유(Update. 2026-05-14)

Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0157Kwetsbaarheden verholpen in Cisco Catalyst SD-WAN Controller en Manager

A critical authentication bypass vulnerability in Cisco Catalyst SD-WAN Controller and Manager allows unauthenticated remote attackers to gain administrative privileges and manipulate network configurations.

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
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. If business-safe, reduce exposure to the affected interface and allow only trusted sources 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.

04

Evidence and provenance

Published 14 May 2026 · Last source change 16 Jun 2026, 17:57 UTC · CWE-287 · Improper Authentication

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-2026-30324
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. 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-rpa2-v69WY2SW
    After
    vendor advisory: sec.cloudapps.cisco.com/cisco-sa-sdwan-rpa2-v69WY2SW
    psirt@cisco.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    Cisco Catalyst SD-WAN Controller: 20.6.4, 20.9.2, 20.3.6, 20.7.2, 20.7.1, 20.5.1, 20.6.2, 19.3.0, 20.6.1, 17.2.4, 18.2.0, 18.4.6, 19.1.0, 19.2.4, 19.2.929, 18.3.8, 18.4.303, 18.3.7, 18.4.1, 19.2.097, 19.2.0, 19.2.099, 18.3.6, 20.4.2, 19.0.0, 20.9.1, 20.3.5, 20.3.1, 18.3.5, 20.6.3, 18.4.3, 18.4.4, 18.3.3, 17.2.8, 20.8.1, 19.2.32, 19.2.2, 17.2.5, 18.4.0, 20.4.1.1, 20.1.3, 20.1.2, 17.2.10, 19.2.098, 20.1.1, 17.2.6, 19.2.1, 18.3.4, 20.4.1, 17.2.9, 19.2.31, 19.0.1a, 18.3.0, 17.2.7, 18.4.5, 20.3.4, 20.3.3, 20.4.1.2, 20.3.2, 18.3.1, 20.1.12, 19.2.3, 20.10.1, 20.6.5, 20.3.7, 20.9.3, 20.11.1, 20.6.3.2, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.9.3.1, 20.6.4.1, 20.3.3.2, 20.6.5.2, 20.3.7.1, 20.11.1.1, 20.10.1.1, 20.6.1.2, 20.1.3.1, 20.9.2.2, 20.6.5.3, 20.6.3.3, 20.3.7.2, 20.6.5.4, 20.9.2.3, 20.9.4, 20.12.1, 20.3.8, 20.6.6, 20.12.2, 20.13.1, 20.9.5, 20.12.3, 20.6.7, 20.9.5.1, 20.14.1, 20.12.3.1, 20.12.4, 20.15.1, 20.9.6, 20.6.8, 20.16.1, 20.9.5.3, 20.12.4.1, 20.15.2, 20.12.5, 20.9.7, 20.15.3, 20.12.5.1, 20.12.5.2, 20.15.4, 20.9.7.1, 20.12.6, 20.9.8, 20.15.4.1, 20.15.4.2, 20.12.5.3, 20.12.6.1, 20.9.8.2, 20.15.5, 20.12.7, 20.9.9, 20.15.5.1, 20.15.4.3, 20.15.4.5, 20.15.5.3, 20.12.7.2, 20.9.9.2; Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 19.1.0, 18.4.303, 19.2.098, 18.3.6.1, 18.2.0, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 17.2.5, 18.4.0.1, 18.3.3, 18.3.0, 19.2.3, 18.4.501_ES, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.4, 19.2.4.0.9, 20.1.3.1 · 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 Controller: 20.6.4, 20.9.2, 20.3.6, 20.7.2, 20.7.1, 20.5.1, 20.6.2, 19.3.0, 20.6.1, 17.2.4, 18.2.0, 18.4.6, 19.1.0, 19.2.4, 19.2.929, 18.3.8, 18.4.303, 18.3.7, 18.4.1, 19.2.097, 19.2.0, 19.2.099, 18.3.6, 20.4.2, 19.0.0, 20.9.1, 20.3.5, 20.3.1, 18.3.5, 20.6.3, 18.4.3, 18.4.4, 18.3.3, 17.2.8, 20.8.1, 19.2.32, 19.2.2, 17.2.5, 18.4.0, 20.4.1.1, 20.1.3, 20.1.2, 17.2.10, 19.2.098, 20.1.1, 17.2.6, 19.2.1, 18.3.4, 20.4.1, 17.2.9, 19.2.31, 19.0.1a, 18.3.0, 17.2.7, 18.4.5, 20.3.4, 20.3.3, 20.4.1.2, 20.3.2, 18.3.1, 20.1.12, 19.2.3, 20.10.1, 20.6.5, 20.3.7, 20.9.3, 20.11.1, 20.6.3.2, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.9.3.1, 20.6.4.1, 20.3.3.2, 20.6.5.2, 20.3.7.1, 20.11.1.1, 20.10.1.1, 20.6.1.2, 20.1.3.1, 20.9.2.2, 20.6.5.3, 20.6.3.3, 20.3.7.2, 20.6.5.4, 20.9.2.3, 20.9.4, 20.12.1, 20.3.8, 20.6.6, 20.12.2, 20.13.1, 20.9.5, 20.12.3, 20.6.7, 20.9.5.1, 20.14.1, 20.12.3.1, 20.12.4, 20.15.1, 20.9.6, 20.6.8, 20.16.1, 20.9.5.3, 20.12.4.1, 20.15.2, 20.12.5, 20.9.7, 20.15.3, 20.12.5.1, 20.12.5.2, 20.15.4, 20.9.7.1, 20.12.6, 20.9.8, 20.15.4.1, 20.15.4.2, 20.12.5.3, 20.12.6.1, 20.9.8.2, 20.15.5, 20.12.7, 20.9.9, 20.15.5.1, 20.15.4.3, 20.15.4.5, 20.15.5.3, 20.12.7.2, 20.9.9.2; Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 19.1.0, 18.4.303, 19.2.098, 18.3.6.1, 18.2.0, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 17.2.5, 18.4.0.1, 18.3.3, 18.3.0, 19.2.3, 18.4.501_ES, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.4, 19.2.4.0.9, 20.1.3.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CISA KEV ↗
  4. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    psirt@cisco.com ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    20.6.4; 20.9.2; 20.3.6; 20.7.2; 20.7.1; 20.5.1; 20.6.2; 19.3.0 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Cisco Catalyst SD-WAN Controller: 20.6.4, 20.9.2, 20.3.6, 20.7.2, 20.7.1, 20.5.1, 20.6.2, 19.3.0, 20.6.1, 17.2.4, 18.2.0, 18.4.6, 19.1.0, 19.2.4, 19.2.929, 18.3.8, 18.4.303, 18.3.7, 18.4.1, 19.2.097, 19.2.0, 19.2.099, 18.3.6, 20.4.2, 19.0.0, 20.9.1, 20.3.5, 20.3.1, 18.3.5, 20.6.3, 18.4.3, 18.4.4, 18.3.3, 17.2.8, 20.8.1, 19.2.32, 19.2.2, 17.2.5, 18.4.0, 20.4.1.1, 20.1.3, 20.1.2, 17.2.10, 19.2.098, 20.1.1, 17.2.6, 19.2.1, 18.3.4, 20.4.1, 17.2.9, 19.2.31, 19.0.1a, 18.3.0, 17.2.7, 18.4.5, 20.3.4, 20.3.3, 20.4.1.2, 20.3.2, 18.3.1, 20.1.12, 19.2.3, 20.10.1, 20.6.5, 20.3.7, 20.9.3, 20.11.1, 20.6.3.2, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.9.3.1, 20.6.4.1, 20.3.3.2, 20.6.5.2, 20.3.7.1, 20.11.1.1, 20.10.1.1, 20.6.1.2, 20.1.3.1, 20.9.2.2, 20.6.5.3, 20.6.3.3, 20.3.7.2, 20.6.5.4, 20.9.2.3, 20.9.4, 20.12.1, 20.3.8, 20.6.6, 20.12.2, 20.13.1, 20.9.5, 20.12.3, 20.6.7, 20.9.5.1, 20.14.1, 20.12.3.1, 20.12.4, 20.15.1, 20.9.6, 20.6.8, 20.16.1, 20.9.5.3, 20.12.4.1, 20.15.2, 20.12.5, 20.9.7, 20.15.3, 20.12.5.1, 20.12.5.2, 20.15.4, 20.9.7.1, 20.12.6, 20.9.8, 20.15.4.1, 20.15.4.2, 20.12.5.3, 20.12.6.1, 20.9.8.2, 20.15.5, 20.12.7, 20.9.9, 20.15.5.1, 20.15.4.3, 20.15.4.5, 20.15.5.3, 20.12.7.2, 20.9.9.2; Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 19.1.0, 18.4.303, 19.2.098, 18.3.6.1, 18.2.0, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 17.2.5, 18.4.0.1, 18.3.3, 18.3.0, 19.2.3, 18.4.501_ES, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.4, 19.2.4.0.9, 20.1.3.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    Cisco Catalyst SD-WAN Controller: 20.6.4, 20.9.2, 20.3.6, 20.7.2, 20.7.1, 20.5.1, 20.6.2, 19.3.0, 20.6.1, 17.2.4, 18.2.0, 18.4.6, 19.1.0, 19.2.4, 19.2.929, 18.3.8, 18.4.303, 18.3.7, 18.4.1, 19.2.097, 19.2.0, 19.2.099, 18.3.6, 20.4.2, 19.0.0, 20.9.1, 20.3.5, 20.3.1, 18.3.5, 20.6.3, 18.4.3, 18.4.4, 18.3.3, 17.2.8, 20.8.1, 19.2.32, 19.2.2, 17.2.5, 18.4.0, 20.4.1.1, 20.1.3, 20.1.2, 17.2.10, 19.2.098, 20.1.1, 17.2.6, 19.2.1, 18.3.4, 20.4.1, 17.2.9, 19.2.31, 19.0.1a, 18.3.0, 17.2.7, 18.4.5, 20.3.4, 20.3.3, 20.4.1.2, 20.3.2, 18.3.1, 20.1.12, 19.2.3, 20.10.1, 20.6.5, 20.3.7, 20.9.3, 20.11.1, 20.6.3.2, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.9.3.1, 20.6.4.1, 20.3.3.2, 20.6.5.2, 20.3.7.1, 20.11.1.1, 20.10.1.1, 20.6.1.2, 20.1.3.1, 20.9.2.2, 20.6.5.3, 20.6.3.3, 20.3.7.2, 20.6.5.4, 20.9.2.3, 20.9.4, 20.12.1, 20.3.8, 20.6.6, 20.12.2, 20.13.1, 20.9.5, 20.12.3, 20.6.7, 20.9.5.1, 20.14.1, 20.12.3.1, 20.12.4, 20.15.1, 20.9.6, 20.6.8, 20.16.1, 20.9.5.3, 20.12.4.1, 20.15.2, 20.12.5, 20.9.7, 20.15.3, 20.12.5.1, 20.12.5.2, 20.15.4, 20.9.7.1, 20.12.6, 20.9.8, 20.15.4.1, 20.15.4.2, 20.12.5.3, 20.12.6.1, 20.9.8.2, 20.15.5, 20.12.7, 20.9.9, 20.15.5.1, 20.15.4.3, 20.15.4.5, 20.15.5.3, 20.12.7.2, 20.9.9.2; Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 19.1.0, 18.4.303, 19.2.098, 18.3.6.1, 18.2.0, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 17.2.5, 18.4.0.1, 18.3.3, 18.3.0, 19.2.3, 18.4.501_ES, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.4, 19.2.4.0.9, 20.1.3.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Cisco Catalyst SD-WAN Controller: 20.6.4, 20.9.2, 20.3.6, 20.7.2, 20.7.1, 20.5.1, 20.6.2, 19.3.0, 20.6.1, 17.2.4, 18.2.0, 18.4.6, 19.1.0, 19.2.4, 19.2.929, 18.3.8, 18.4.303, 18.3.7, 18.4.1, 19.2.097, 19.2.0, 19.2.099, 18.3.6, 20.4.2, 19.0.0, 20.9.1, 20.3.5, 20.3.1, 18.3.5, 20.6.3, 18.4.3, 18.4.4, 18.3.3, 17.2.8, 20.8.1, 19.2.32, 19.2.2, 17.2.5, 18.4.0, 20.4.1.1, 20.1.3, 20.1.2, 17.2.10, 19.2.098, 20.1.1, 17.2.6, 19.2.1, 18.3.4, 20.4.1, 17.2.9, 19.2.31, 19.0.1a, 18.3.0, 17.2.7, 18.4.5, 20.3.4, 20.3.3, 20.4.1.2, 20.3.2, 18.3.1, 20.1.12, 19.2.3, 20.10.1, 20.6.5, 20.3.7, 20.9.3, 20.11.1, 20.6.3.2, 20.4.2.3, 20.3.5.1, 20.3.4.3, 20.9.3.1, 20.6.4.1, 20.3.3.2, 20.6.5.2, 20.3.7.1, 20.11.1.1, 20.10.1.1, 20.6.1.2, 20.1.3.1, 20.9.2.2, 20.6.5.3, 20.6.3.3, 20.3.7.2, 20.6.5.4, 20.9.2.3, 20.9.4, 20.12.1, 20.3.8, 20.6.6, 20.12.2, 20.13.1, 20.9.5, 20.12.3, 20.6.7, 20.9.5.1, 20.14.1, 20.12.3.1, 20.12.4, 20.15.1, 20.9.6, 20.6.8, 20.16.1, 20.9.5.3, 20.12.4.1, 20.15.2, 20.12.5, 20.9.7, 20.15.3, 20.12.5.1, 20.12.5.2, 20.15.4, 20.9.7.1, 20.12.6, 20.9.8, 20.15.4.1, 20.15.4.2, 20.12.5.3, 20.12.6.1, 20.9.8.2, 20.15.5, 20.12.7, 20.9.9, 20.15.5.1, 20.15.4.3, 20.15.4.5, 20.15.5.3, 20.12.7.2, 20.9.9.2; Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 19.1.0, 18.4.303, 19.2.098, 18.3.6.1, 18.2.0, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 17.2.5, 18.4.0.1, 18.3.3, 18.3.0, 19.2.3, 18.4.501_ES, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.4, 19.2.4.0.9, 20.1.3.1 · 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 ↗
  7. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Canadian Centre for Cyber Security ↗
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-2026-30324↗Canadian Centre for Cyber Security remediation guidance↗CISA KEV record↗CVE authority or vendor reference · Cisco CISCO-SA-SDWAN-RPA2-V69WY2SW↗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-2026-20182 · cve.blacktree.nl