Cisco IOS buffer manage CVE-2026-76464
CVE-2026-76464 Published on October 7, 2026
Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco networking engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.
The vulnerabilities tracked by this CVE-2026-76464 are related to buffer management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-119.
Vulnerability Analysis
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2026-76464 has been classified to as a Buffer Overflow vulnerability or weakness.
Affected Versions
Cisco Campus Gateway Software:- Version CG 33.1.3 is affected.
- Version MR 33.1.2 is affected.
- Version MR 30.6 is affected.
- Version MR 32.1.7 is affected.
- Version MR 32.2.3 is affected.
- Version MR 32.2.4 is affected.
- Version MR 33.1.1 is affected.
- Version 4.20 is affected.
- Version 5.0 is affected.
- Version 5.1 is affected.
- Version 5.2 is affected.
- Version 5.3 is affected.
- Version 5.4 is affected.
- Version 5.4.1 is affected.
- Version 5.5 is affected.
- Version 5.5.1 is affected.
- Version 5.6 is affected.
- Version 5.6.1 is affected.
- Version 6.0 is affected.
- Version 6.0.1 is affected.
- Version 5.6.2 is affected.
- Version 6.0.2 is affected.
- Version 6.1 is affected.
- Version 6.1.1 is affected.
- Version 6.1.2 is affected.
- Version 6.2 is affected.
- Version 6.2.1 is affected.
- Version 6.2.2 is affected.
- Version 6.3 is affected.
- Version 6.3.2 is affected.
- Version 2.0 is affected.
- Version 2.1 is affected.
- Version 2.2 is affected.
- Version 3.0 is affected.
- Version 3.1 is affected.
- Version 3.2 is affected.
- Version 3.3 is affected.
- Version 3.4 is affected.
- Version 3.5 is affected.
- Version 3.6 is affected.
- Version 3.7 is affected.
- Version 3.8 is affected.
- Version 3.9 is affected.
- Version 3.10 is affected.
- Version 3.11 is affected.
- Version 3.12 is affected.
- Version 3.13 is affected.
- Version 3.14 is affected.
- Version 3.15 is affected.
- Version 3.16 is affected.
- Version 3.17 is affected.
- Version 3.18 is affected.
- Version 3.19 is affected.
- Version 3.20 is affected.
- Version 3.21 is affected.
- Version 3.22 is affected.
- Version 3.23 is affected.
- Version 3.24 is affected.
- Version 3.25 is affected.
- Version 3.26 is affected.
- Version 3.27 is affected.
- Version 3.28 is affected.
- Version 3.29 is affected.
- Version 3.30 is affected.
- Version 3.31 is affected.
- Version 3.32 is affected.
- Version 3.33 is affected.
- Version 3.34 is affected.
- Version 3.35 is affected.
- Version 3.36 is affected.
- Version 4.0 is affected.
- Version 4.1 is affected.
- Version 4.2 is affected.
- Version 4.3 is affected.
- Version 4.4 is affected.
- Version 4.5 is affected.
- Version 4.6 is affected.
- Version 4.7 is affected.
- Version 4.8 is affected.
- Version 4.9 is affected.
- Version 4.10 is affected.
- Version 4.11 is affected.
- Version 4.12 is affected.
- Version 4.13 is affected.
- Version 4.14 is affected.
- Version 4.15 is affected.
- Version 4.16 is affected.
- Version 4.17 is affected.
- Version 4.18 is affected.
- Version 4.18.1 is affected.
- Version 4.19 is affected.
- Version MV 7.3 is affected.
- Version MV 7.3.1 is affected.
- Version MV 7.3.2 is affected.
- Version MV 7.2.1 is affected.
- Version MV 7.2.2 is affected.
- Version 16.2 is affected.
- Version 16.3 is affected.
- Version 16.4 is affected.
- Version 16.5 is affected.
- Version 16.6 is affected.
- Version 17.3 is affected.
- Version 17.6 is affected.
- Version 17.7 is affected.
- Version 17.8 is affected.
- Version 17.9 is affected.
- Version 17.10 is affected.
- Version 18.1 is affected.
- Version 18.2 is affected.
- Version 19.1 is affected.
- Version MX 18.211.2 is affected.
- Version MX 26.2.1 is affected.
- Version MX 19.2.8 is affected.
- Version MX 26.2.2 is affected.
- Version MX 26.1.4 is affected.
- Version MX 26.1.5 is affected.
- Version MX 26.1.6 is affected.