CVE-2026-76464CWE-119

CVE-2026-76464

Critical · published October 7, 2026

CVSS v3.1
9.6
EPSS
0%
Percentile
8.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00192 · 8.4th percentile
Weakness
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
Published
2026-10-07T21:16Z
References (1)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-meraki-os-drbEX9GH · [email protected]
EPSS history
Timeline
  • 09 OCT 03:31Z
    EPSS moved — → 0%
    epss
  • 07 OCT 16:18Z
    Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
    cvelistv5