CVE-2026-76464
Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
Description
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.
Weakness: CWE-119
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Meraki MX | Firewall / NGFW | cna-assigner |
Vendor-reported products (4)
- Cisco · Cisco Campus Gateway Software
- Cisco · Cisco Meraki MR Wireless Access Points Software
- Cisco · Cisco Meraki MV Firmware
- Cisco · Cisco Meraki MX Firmware
Vendor advisory
cisco-sa-hardening-meraki-os-drbEX9GH
Cisco Meraki Security Hardening Release: October 2026
Cisco’s rating: Critical (advisory CVSS 9.6) · Published Oct 7, 2026
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from