Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
- Published
- Last modified
- Status
- published
- Known exploitation
- Not listed in CISA KEV
- Public exploit
- None on Exploit-DB
- Exploitation: none
- Automatable: no
- Technical impact: total
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Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).
SSVC documentationSummary
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.
Affected versions
- Cisco Cisco Campus Gateway Software
CG 33.1.3
- Cisco Cisco Meraki MR Wireless Access Points Software
MR 33.1.2, MR 30.6, MR 32.1.7, MR 32.2.3, MR 32.2.4, MR 33.1.1
- Cisco Cisco Meraki MV Firmware
4.20, 5.0, 5.1, 5.2, 5.3, 5.4, 5.4.1, 5.5, 5.5.1, 5.6, 5.6.1, 6.0, 6.0.1, 5.6.2, 6.0.2, 6.1, 6.1.1, 6.1.2, 6.2, 6.2.1, 6.2.2, 6.3, 6.3.2, 2.0, 2.1, 2.2, 3.0, 3.1, 3.2, 3.3, and 59 more
- Cisco Cisco Meraki MX Firmware
16.2, 16.3, 16.4, 16.5, 16.6, 17.3, 17.6, 17.7, 17.8, 17.9, 17.10, 18.1, 18.2, 19.1, MX 18.211.2, MX 26.2.1, MX 19.2.8, MX 26.2.2, MX 26.1.4, MX 26.1.5, MX 26.1.6