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.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco Campus Gateway Software unknown
Version Status Constraints
CG 33.1.3 affected —
Cisco Cisco Meraki MR Wireless Access Points Software unknown
Version Status Constraints
MR 33.1.2 affected —
MR 30.6 affected —
MR 32.1.7 affected —
MR 32.2.3 affected —
MR 32.2.4 affected —
MR 33.1.1 affected —
Cisco Cisco Meraki MV Firmware unknown
Version Status Constraints
4.20 affected —
5.0 affected —
5.1 affected —
5.2 affected —
5.3 affected —
5.4 affected —
5.4.1 affected —
5.5 affected —
5.5.1 affected —
5.6 affected —
5.6.1 affected —
6.0 affected —
6.0.1 affected —
5.6.2 affected —
6.0.2 affected —
6.1 affected —
6.1.1 affected —
6.1.2 affected —
6.2 affected —
6.2.1 affected —
6.2.2 affected —
6.3 affected —
6.3.2 affected —
2.0 affected —
2.1 affected —
2.2 affected —
3.0 affected —
3.1 affected —
3.2 affected —
3.3 affected —
3.4 affected —
3.5 affected —
3.6 affected —
3.7 affected —
3.8 affected —
3.9 affected —
3.10 affected —
3.11 affected —
3.12 affected —
3.13 affected —
3.14 affected —
3.15 affected —
3.16 affected —
3.17 affected —
3.18 affected —
3.19 affected —
3.20 affected —
3.21 affected —
3.22 affected —
3.23 affected —
3.24 affected —
3.25 affected —
3.26 affected —
3.27 affected —
3.28 affected —
3.29 affected —
3.30 affected —
3.31 affected —
3.32 affected —
3.33 affected —
3.34 affected —
3.35 affected —
3.36 affected —
4.0 affected —
4.1 affected —
4.2 affected —
4.3 affected —
4.4 affected —
4.5 affected —
4.6 affected —
4.7 affected —
4.8 affected —
4.9 affected —
4.10 affected —
4.11 affected —
4.12 affected —
4.13 affected —
4.14 affected —
4.15 affected —
4.16 affected —
4.17 affected —
4.18 affected —
4.18.1 affected —
4.19 affected —
MV 7.3 affected —
MV 7.3.1 affected —
MV 7.3.2 affected —
MV 7.2.1 affected —
MV 7.2.2 affected —
Cisco Cisco Meraki MX Firmware unknown
Version Status Constraints
16.2 affected —
16.3 affected —
16.4 affected —
16.5 affected —
16.6 affected —
17.3 affected —
17.6 affected —
17.7 affected —
17.8 affected —
17.9 affected —
17.10 affected —
18.1 affected —
18.2 affected —
19.1 affected —
MX 18.211.2 affected —
MX 26.2.1 affected —
MX 19.2.8 affected —
MX 26.2.2 affected —
MX 26.1.4 affected —
MX 26.1.5 affected —
MX 26.1.6 affected —

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-meraki-os-drbEX9GH cve-icon cve-icon
History

Wed, 07 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 07 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
Weaknesses CWE-119
References
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-10-07T18:05:14.042Z

Reserved: 2026-08-19T12:02:03.637Z

Link: CVE-2026-76464

cve-icon Vulnrichment

Updated: 2026-10-07T18:01:55.358Z

cve-icon NVD

Status : Received

Published: 2026-10-07T17:16:59.053

Modified: 2026-10-07T19:17:40.650

Link: CVE-2026-76464

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T18:15:14Z

Weaknesses