Cisco IOS and IOS XE Software SNMP Denial of Service and Remote Code Execution Vulnerability
CISA lists this Cisco IOS and IOS XE vulnerability as known exploited. The vendor's advisory has the fixed versions.
CISA catalog record
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.
- Product
- IOS and IOS XE
- Added to KEV
- 29 Sep 2025
- Federal remediation due
- 20 Oct 2025
- Known ransomware use
- Not reported
What changed
First observed 14 Oct 2026No field changes in the recorded history.
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