CVE-2025-20352 — Cisco IOS and IOS XE Software SNMP Denial of Service and Remote Code Execution Vulnerability
2025-09-29 • CISA Known Exploited Vulnerability
[event] 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.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Cisco |
| Product | IOS and IOS XE |
| CWE | CWE-121 |
| CVE ID | CVE-2025-20352 |
| Date Added | 2025-09-29 |
| Due Date | 2025-10-20 |
| Ransomware Campaign | Unknown |
> MITIGATION
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Due Date: 2025-10-20