CVE-2025-20352 - Cisco IOS and IOS XE Stack-based Buffer Overflow Vulnerability
Project:Cisco
Product:IOS and IOS XE
Date Added:2025-09-29Due Date:2025-10-20
Vulnerability Name
Cisco IOS and IOS XE Stack-based Buffer Overflow Vulnerability
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.
Known To Be Used in Ransomware Campaigns?
Unknown
Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Additional Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-x4LPhte
https://nvd.nist.gov/vuln/detail/CVE-2025-20352