IOS e IOS XE 16.11 vulnerabilities
2 advisories affect Cisco IOS e IOS XE 16.11, 1 already exploited by attackers. Latest: October 2, 2026.
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| Vulnerability | Severity | Affected versions |
|---|---|---|
| Cisco IOS XE Software Security Hardening Release: August 2026 CVE-2026-20267 +6 · October 2, 2026 | Critical 9 | 6 versions, from 16.11.1a to 16.11.2 |
| Cisco IOS and IOS XE Software SNMP Denial of Service and Remote Code Execution Vulnerability CVE-2025-20352 · September 29, 2025 | High 7.7 Exploited | 5 versions, from 16.11.1 to 16.11.2 |
Affected versions are compiled automatically from vendor advisories and NVD and may contain errors. Where no fixed version is shown, you will find it in the official advisory linked from every page: check it there before updating.
Other IOS e IOS XE versions: 17.3 · 17.2 · 17.1 · 16.12 · 16.10 · 16.9 · 16.8 · 16.7 · 16.6