Cisco IOS Improper Input Validation (CVE-2026-76468)
CVE-2026-76468 Published on October 7, 2026
Cisco Meraki Hardening Release - Input Validation 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 CVE-2026-76468 are related to improper input validation that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-20.
Vulnerability Analysis
CVE-2026-76468 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and a small impact on availability.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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.