by Kastro
Paper/Archive/CVE-2026-76464

CVE-2026-76464

Cisco Cisco Campus Gateway Software — Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities

EPSS 0.2%CVSS 9.6
critical.is priorityof 100
31
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 8.9.089 × 201.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Cisco Campus Gateway SoftwareCG 33.1.3–CNA
Cisco Meraki MR Wireless Access Points SoftwareMR 33.1.2–CNA
Cisco Meraki MR Wireless Access Points SoftwareMR 30.6–CNA
Cisco Meraki MR Wireless Access Points SoftwareMR 32.1.7–CNA
Cisco Meraki MR Wireless Access Points SoftwareMR 32.2.3–CNA
Cisco Meraki MR Wireless Access Points SoftwareMR 32.2.4–CNA
Cisco Meraki MR Wireless Access Points SoftwareMR 33.1.1–CNA
Cisco Meraki MV Firmware4.20–CNA
Cisco Meraki MV Firmware5.0–CNA
Cisco Meraki MV Firmware5.1–CNA
Cisco Meraki MV Firmware5.2–CNA
Cisco Meraki MV Firmware5.3–CNA

Scores by source

cisco (CNA)9.6CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refsec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-meraki-os-drbEX9GH