Vulnerability · Published Oct 7, 2026 · Assigned by cisco
CVE-2026-76464Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
Critical 9.6
In plain English
A critical-severity memory corruption in Cisco Campus Gateway Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Campus Gateway Software | CG 33.1.3 |
| Cisco | Cisco Meraki MR Wireless Access Points Software | MR 33.1.2MR 30.6MR 32.1.7MR 32.2.3MR 32.2.4MR 33.1.1 |
| Cisco | Cisco Meraki MV Firmware | 4.205.05.15.25.35.45.4.15.5 |
| Cisco | Cisco Meraki MX Firmware | 16.216.316.416.516.617.317.617.7 |
Weakness: CWE-119 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H