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Full vulnerability report · 2025
CVE-2025-20352High confidence

Cisco IOS and IOS XE Software SNMP Denial of Service and Remote Code Execution Vulnerability

Cisco · IOS and IOS XE

Official source article: Cisco CISCO-SA-SNMP-X4LPHTE ↗. Check the applicable product and release in the original source.

7.7HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

CISA confirms exploitation in the wild and lists 2025-10-20 as the remediation due date. Verified remediation exists for at least one product or source, but 1,084 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 29 Sep 2025

Evidence used

  • CISA confirms exploitation in the wild.
  • EPSS is 39.45% 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 IOS and IOS XE 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.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 1,084 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
cisco-sa-snmp-x4LPhte · CSAF 2.0 · revision 2.3.0 · finalCisco PSIRTSNMP Remote Code Execution Vulnerabilities in Cisco IOS and IOS XE Software
1,084 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Catalyst IR1100 Rugged Series Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Cloud Services Router 1000V Series
  • Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco 1000 Series Integrated Services Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco ASR 1000 Series Aggregation Services Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco 4000 Series Integrated Services Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Integrated Services Virtual Router
  • Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Catalyst IR1100 Rugged Series Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Cloud Services Router 1000V Series
  • Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco 1000 Series Integrated Services Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco ASR 1000 Series Aggregation Services Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco 4000 Series Integrated Services Routers
  • Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Integrated Services Virtual Router
Summary
Complete.
Remediation
Cisco has released software updates that address this vulnerability.
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-2025-31023

CISA KEV mirrored by ENISA

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow the following: An authenticated, remote attacker with low privileges could cause a denial of service (DoS) condition on an affected device that is running Cisco IOS Software or Cisco IOS XE Software. To cause the DoS, the attacker must have the SNMPv2c or earlier read-only community string or valid SNMPv3 user credentials. An authenticated, remote attacker with high privileges could execute code as the root user on an affected device that is running Cisco IOS XE Software. To execute code as the root user, the attacker must have the SNMPv1 or v2c read-only community string or valid SNMPv3 user credentials and administrative or privilege 15 credentials on the affected device. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device over IPv4 or IPv6 networks. This vulnerability is due to a stack overflow condition in the SNMP subsystem of the affected software. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system. Note: This vulnerability affects all versions of SNMP.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 29 Sep 2025. Evidence sources: cisa_kev.
ENISA score
7.7 · CVSS 3.1
Advisory evidence
4 linked advisory records
Explicit mitigation evidence

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

  • csaf_ncscnl · NCSC-2025-0297Kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE Software
Recommended actionPatch only the product branches with a verified fix

CISA confirms exploitation in the wild and lists 2025-10-20 as the remediation due date. Verified remediation exists for at least one product or source, but 1,084 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

Cisco IOS and IOS XE contains a stack-based buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem that could allow for denial of service or remote code execution. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system.

What

Cisco IOS and IOS XE contains a stack-based buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem that could allow for denial of service or remote code execution. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system.

Why

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

What

Cisco IOS and IOS XE contains a stack-based buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem that could allow for denial of service or remote code execution. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system.

Why

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

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 2025-09-29.

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 → Stack-based Buffer Overflow → execute code or commands in the affected security context
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
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-121 ↗

CWE-121: Stack-based Buffer Overflow. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

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:L/UI:N/S:C/C:N/I:N/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.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
NetworkRemote code executionDenial of serviceCWE-121CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2025-31023Known-exploited evidence recorded

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow the following: An authenticated, remote attacker with low privileges could cause a denial of service (DoS) condition on an affected device that is running Cisco IOS Software or Cisco IOS XE Software. To cause the DoS, the attacker must have the SNMPv2c or earlier read-only community string or valid SNMPv3 user credentials. An authenticated, remote attacker with high privileges could execute code as the root user on an affected device that is running Cisco IOS XE Software. To execute code as the root user, the attacker must have the SNMPv1 or v2c read-only community string or valid SNMPv3 user credentials and administrative or privilege 15 credentials on the affected device. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device over IPv4 or IPv6 networks. This vulnerability is due to a stack overflow condition in the SNMP subsystem of the affected software. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system. Note: This vulnerability affects all versions of SNMP.

Official EUVD record ↗
BSI · German · WID-SEC-2025-2124Cisco IOS und IOS XE: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Cisco IOS und Cisco IOS XE ausnutzen, um vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen, einen Denial-of-Service-Zustand zu verursachen und beliebigen Code auszuführen – sogar mit Root-Rechten.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV25-616Cisco security advisory (AV25-616) – Update 1

On September 24, 2025, Cisco published security advisories to address vulnerabilities in the following products: Update 1

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20251001Security Bulletin 01 Oct 2025

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 01 Oct 2025, published on 1 October 2025. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0818Multiples vulnérabilités dans Cisco IOS et IOS XE

De multiples vulnérabilités ont été découvertes dans Cisco IOS et IOS XE. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité. Cisco indique que la vulnérabilité CVE-2025-20352 est activement exploitée.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2025-014992複数のシスコシステムズ製品におけるスタックベースのバッファオーバーフローの脆弱性

シスコシステムズの Cisco IOS XE SD-WAN、Cisco IOS XE、Cisco IOS には、スタックベースのバッファオーバーフローの脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6591美 CISA 발표 주요 Exploit 정보공유(Update. 2025-09-29)

Cisco IOS and IOS XE contains a stack-based buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem that could allow for denial of service or remote code execution. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system.

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6590Cisco 제품 보안 업데이트 권고

Cisco IOS Software 및 Cisco IOS XE Software의 SNMP 하위 시스템에서 발생하는 루트 권한 코드 실행 취약점(CVE-2025-20352) [1][5]

Official advisory ↗
NCSC-NL · Dutch · NCSC-2025-0297Kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE Software

De kwetsbaarheden omvatten verschillende problemen, waaronder een buffer overflow in de command-line interface (CLI) die kan leiden tot onverwachte herstarts van apparaten en een kwetsbaarheid in de TACACS+ protocolimplementatie die ongeauthenticeerde aanvallers in staat stelt om gevoelige gegevens te benaderen. Daarnaast zijn er kwetsbaarheden in de web UI die kunnen leiden tot cross-site scripting (XSS) aanvallen en een probleem in de NBAR-functie dat kan resulteren in een denial of service (DoS) door het versturen van gemanipuleerde CAPWAP-pakketten. Ook zijn er kwetsbaarheden in de SNMP-subsystemen die kunnen leiden tot ongeautoriseerde toegang en systeemdisruptie. Cisco vermeldt dat de kwetsbaarheid met kenmerk CVE-2025-20352 actief is misbruikt. Deze kwetsbaarheid stelt een kwaadwillende die in het bezit is van een read-only community string (SNMPv1/2) of geldige authenticatie (SNMPv3) een Denial-of-Service kan veroorzaken, of mogelijk willekeurige commando's kan uitvoeren met root-rechten. Voor dat laatste dient de kwaadwillende wel over administrator-rechten te beschikken.

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.
Fix availability varies by product
Affected
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 24 Sept 2025 · Last source change 26 Feb 2026, 17:48 UTC · CWE-121 · Stack-based Buffer Overflow

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-2025-31023
Product sourceVendor CSAF · Cisco PSIRT
Remediation sourceVendor CSAF · Cisco PSIRT
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. Vendor guidanceAuthoritative vendor guidance changed: added mitigation: sec.cloudapps.cisco.com/cisco-sa-snmp-x4LPhte; removed patch: sec.cloudapps.cisco.com/cisco-sa-snmp-x4LPhte.
    Before
    patch: sec.cloudapps.cisco.com/cisco-sa-snmp-x4LPhte · remediation: sec.cloudapps.cisco.com/cisco-sa-snmp-x4LPhte
    After
    mitigation: sec.cloudapps.cisco.com/cisco-sa-snmp-x4LPhte · remediation: sec.cloudapps.cisco.com/cisco-sa-snmp-x4LPhte
    psirt@cisco.com ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    12.2(55)SE; 12.2(55)SE3; 12.2(55)SE2; 12.2(58)SE; 12.2(55)SE1; 12.2(58)SE1; 12.2(55)SE4; 12.2(58)SE2 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    IOS: 12.2(55)SE, 12.2(55)SE3, 12.2(55)SE2, 12.2(58)SE, 12.2(55)SE1, 12.2(58)SE1, 12.2(55)SE4, 12.2(58)SE2, 12.2(55)SE5, 12.2(55)SE6, 12.2(55)SE7, 12.2(55)SE8, 12.2(55)SE9, 12.2(55)SE10, 12.2(55)SE11, 12.2(55)SE12, 12.2(55)SE13, 12.2(58)EZ, 12.2(53)EZ, 12.2(55)EZ, 12.2(60)EZ, 12.2(60)EZ1, 12.2(60)EZ2, 12.2(60)EZ3, 12.2(60)EZ4, 12.2(60)EZ5, 12.2(60)EZ6, 12.2(60)EZ7, 12.2(60)EZ8, 12.2(60)EZ9, 12.2(60)EZ10, 12.2(60)EZ11, 12.2(60)EZ12, 12.2(60)EZ13, 12.2(60)EZ14, 12.2(60)EZ15, 12.2(33)SXI2, 12.2(33)SXI3, 12.2(33)SXI5, 12.2(33)SXI4a, 12.2(33)SXI4, 12.2(33)SXI2a, 12.2(33)SXI, 12.2(33)SXI6, 12.2(33)SXI7, 12.2(33)SXI1, 12.2(33)SXI8, 12.2(33)SXI9, 12.2(33)SXI8a, 12.2(33)SXI10, 12.2(33)SXI11, 12.2(33)SXI12, 12.2(33)SXI13, 12.2(33)SXI14, 12.2(50)SQ2, 12.2(50)SQ1, 12.2(50)SQ, 12.2(50)SQ3, 12.2(50)SQ4, 12.2(50)SQ5, 12.2(50)SQ6, 12.2(50)SQ7, 15.3(1)T, 15.3(2)T, 15.3(1)T1, 15.3(1)T2, 15.3(1)T3, 15.3(1)T4, 15.3(2)T1, 15.3(2)T2, 15.3(2)T3, 15.3(2)T4, 15.0(1)EY, 15.0(1)EY1, 15.0(1)EY2, 15.0(2)EY, 15.0(2)EY1, 15.0(2)EY2, 15.0(2)EY3, 15.0(1)SE, 15.0(2)SE, 15.0(1)SE1, 15.0(1)SE2, 15.0(1)SE3, 15.0(2)SE1, 15.0(2)SE2, 15.0(2)SE3, 15.0(2)SE4, 15.0(2)SE5, 15.0(2)SE6, 15.0(2)SE7, 15.0(2)SE8, 15.0(2)SE9, 15.0(2)SE10, 15.0(2)SE11, 15.0(2)SE10a, 15.0(2)SE12, 15.0(2)SE13, 15.0(1)SY, 15.0(1)SY1, 15.0(1)SY2, 15.0(1)SY3, 15.0(1)SY4, 15.0(1)SY5, 15.0(1)SY6, 15.0(1)SY7, 15.0(1)SY8, 15.0(1)SY7a, 15.0(1)SY9, 15.0(1)SY10, 12.2(33)SXJ, 12.2(33)SXJ1, 12.2(33)SXJ2, 12.2(33)SXJ3, 12.2(33)SXJ4, 12.2(33)SXJ5, 12.2(33)SXJ6, 12.2(33)SXJ7, 12.2(33)SXJ8, 12.2(33)SXJ9, 12.2(33)SXJ10, 15.1(1)SG, 15.1(2)SG, 15.1(1)SG1, 15.1(1)SG2, 15.1(2)SG1, 15.1(2)SG2, 15.1(2)SG3, 15.1(2)SG4, 15.1(2)SG5, 15.1(2)SG6, 15.1(2)SG7, 15.1(2)SG8, 15.2(4)M, 15.2(4)M1, 15.2(4)M2, 15.2(4)M4, 15.2(4)M3, 15.2(4)M5, 15.2(4)M8, 15.2(4)M10, 15.2(4)M7, 15.2(4)M6, 15.2(4)M9, 15.2(4)M6a, 15.2(4)M11, 15.0(2)SG, 15.0(2)SG1, 15.0(2)SG2, 15.0(2)SG3, 15.0(2)SG4, 15.0(2)SG5, 15.0(2)SG6, 15.0(2)SG7, 15.0(2)SG8, 15.0(2)SG9, 15.0(2)SG10, 15.0(2)SG11, 15.2(2)GC, 15.2(3)GC, 15.2(3)GC1, 15.2(4)GC, 15.2(4)GC1, 15.2(4)GC2, 15.2(4)GC3, 15.1(1)SY, 15.1(1)SY1, 15.1(2)SY, 15.1(2)SY1, 15.1(2)SY2, 15.1(1)SY2, 15.1(1)SY3, 15.1(2)SY3, 15.1(1)SY4, 15.1(2)SY4, 15.1(1)SY5, 15.1(2)SY5, 15.1(2)SY4a, 15.1(1)SY6, 15.1(2)SY6, 15.1(2)SY7, 15.1(2)SY8, 15.1(2)SY9, 15.1(2)SY10, 15.1(2)SY11, 15.1(2)SY12, 15.1(2)SY13, 15.1(2)SY14, 15.1(2)SY15, 15.1(2)SY16, 15.4(1)T, 15.4(2)T, 15.4(1)T2, 15.4(1)T1, 15.4(1)T3, 15.4(2)T1, 15.4(2)T3, 15.4(2)T2, 15.4(1)T4, 15.4(2)T4, 15.0(2)EA, 15.0(2)EA1, 15.2(1)E, 15.2(2)E, 15.2(1)E1, 15.2(3)E, 15.2(1)E2, 15.2(1)E3, 15.2(2)E1, 15.2(4)E, 15.2(3)E1, 15.2(2)E2, 15.2(2a)E1, 15.2(2)E3, 15.2(2a)E2, 15.2(3)E2, 15.2(3a)E, 15.2(3)E3, 15.2(4)E1, 15.2(2)E4, 15.2(2)E5, 15.2(4)E2, 15.2(3)E4, 15.2(5)E, 15.2(4)E3, 15.2(2)E6, 15.2(5a)E, 15.2(5)E1, 15.2(5b)E, 15.2(2)E5a, 15.2(5c)E, 15.2(2)E5b, 15.2(5a)E1, 15.2(4)E4, 15.2(2)E7, 15.2(5)E2, 15.2(6)E, 15.2(4)E5, 15.2(5)E2c, 15.2(2)E8, 15.2(6)E0a, 15.2(6)E1, 15.2(6)E0c, 15.2(4)E6, 15.2(6)E2, 15.2(2)E9, 15.2(4)E7, 15.2(7)E, 15.2(2)E10, 15.2(4)E8, 15.2(6)E2a, 15.2(6)E2b, 15.2(7)E1, 15.2(7)E0a, 15.2(7)E0b, 15.2(7)E0s, 15.2(6)E3, 15.2(4)E9, 15.2(7)E2, 15.2(7a)E0b, 15.2(4)E10, 15.2(7)E3, 15.2(7)E1a, 15.2(7b)E0b, 15.2(7)E2a, 15.2(4)E10a, 15.2(7)E4, 15.2(7)E3k, 15.2(8)E, 15.2(8)E1, 15.2(7)E5, 15.2(7)E6, 15.2(8)E2, 15.2(4)E10d, 15.2(7)E7, 15.2(8)E3, 15.2(7)E8, 15.2(8)E4, 15.2(7)E9, 15.2(8)E5, 15.2(8)E6, 15.2(7)E10, 15.2(7)E11, 15.2(8)E7, 15.2(7)E12, 15.2(2)JB, 15.2(2)JB2, 15.2(4)JB, 15.2(2)JB3, 15.2(4)JB1, 15.2(4)JB2, 15.2(4)JB3, 15.2(4)JB3a, 15.2(2)JB4, 15.2(4)JB4, 15.2(4)JB3h, 15.2(4)JB3b, 15.2(4)JB5, 15.2(4)JB6, 15.2(2)JB5, 15.2(2)JB6, 15.2(2)JAX, 15.3(3)M, 15.3(3)M1, 15.3(3)M2, 15.3(3)M3, 15.3(3)M5, 15.3(3)M4, 15.3(3)M6, 15.3(3)M7, 15.3(3)M8, 15.3(3)M9, 15.3(3)M10, 15.3(3)M8a, 15.2(4)JN, 15.2(1)EY, 15.0(2)EJ, 15.0(2)EJ1, 15.2(1)SY, 15.2(1)SY1, 15.2(1)SY0a, 15.2(1)SY2, 15.2(2)SY, 15.2(1)SY1a, 1…; 2 additional product groups retained in the authoritative source · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    Cisco IOS XE Catalyst SD-WAN 16.9.1 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.1 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.1 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.1 when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.9.2 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.2 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.2 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.2 when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.9.3 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.3 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.3 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.3 when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.9.4 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.4 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.4 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.9.4 when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.10.1 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.1 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.1 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.1 when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.10.2 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.2 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.2 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.2 when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.10.3 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.3 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.3 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.10.3 when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.10.3a when installed on Cisco Cloud Services Router 1000V Series; Cisco IOS XE Catalyst SD-WAN 16.10.3a when installed on Cisco 1000 Series Integrated Services Routers; and 1113 more
    After
    Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Catalyst IR1100 Rugged Series Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Cloud Services Router 1000V Series; Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1b when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Catalyst IR1100 Rugged Series Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Cloud Services Router 1000V Series; Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1d when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco Catalyst IR1100 Rugged Series Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco Cloud Services Router 1000V Series; Cisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.1e when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco Catalyst IR1100 Rugged Series Routers; Cisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco Cloud Services Router 1000V Series; Cisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.2r when installed on Cisco Integrated Services Virtual Router; Cisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco Catalyst IR1100 Rugged Series Routers; Cisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco Cloud Services Router 1000V Series; Cisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco 1000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco ASR 1000 Series Aggregation Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco 4000 Series Integrated Services Routers; Cisco IOS XE Catalyst SD-WAN 16.12.3 when installed on Cisco Integrated Services Virtual Router; and 1054 more
    Cisco PSIRT ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Mitigation reference recorded
Remediation guidance recorded
ENISA EUVD · EUVD-2025-31023↗CVE authority or vendor reference · Cisco CISCO-SA-SNMP-X4LPHTE↗CISA KEV record↗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-2025-20352 · cve.blacktree.nl