CVE-2025-20352

UNKNOWNKnown Exploited

CISA Known Exploited Vulnerability

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-x4LPhte ; https://nvd.nist.gov/vuln/detail/CVE-2025-20352

Remediation deadline: October 20, 2025

Description

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.

Timeline

Published:September 29th, 2025 12:00 AM

Last modified:September 29th, 2025 12:00 AM

Added to KEV:September 29th, 2025

CVSS Scoring

No CVSS v3 score available

Affected Software

From NVD CPE configuration data

Vendors

Cisco

Products

IOS and IOS XE

Weaknesses (CWE)

CWE-121

References & Reports

Advisories, patches, and third-party reports

No references available.

Source: CISA KEV + NVD · Data may lag official sources by up to one minute