CVE-2026-76464 Cisco CVE debrief

Who should care

Defenders responsible for Cisco Meraki products, including Campus Gateway Software, MR Wireless Access Points Software, MV Firmware, and MX Firmware, should assess exposure and prioritize remediation based on affected versions and products.

Why it matters

CVE-2026-76464 is a critical vulnerability in Cisco Meraki products that requires immediate attention from defenders. The vulnerability affects various Cisco Meraki products, including Campus Gateway Software, MR Wireless Access Points Software, MV Firmware, and MX Firmware. Defenders should assess exposure, prioritize remediation, and apply patches or updates to mitigate the vulnerability.

• Verify inventory of Cisco Meraki products and check for affected versions
• Assess exposure of Cisco Meraki products to buffer management vulnerabilities
• Prioritize remediation of affected Cisco Meraki products
• Apply patches or updates provided by Cisco to mitigate vulnerability

Technical summary

CVE-2026-76464 is a critical vulnerability in Cisco Meraki products, including Campus Gateway Software, MR Wireless Access Points Software, MV Firmware, and MX Firmware. The vulnerability is related to buffer management issues and has a CVSS score of 9.6. Affected versions and products are listed in the source item. Defenders should assess exposure, prioritize remediation, and apply patches or updates to mitigate the vulnerability. The vulnerability requires immediate attention from defenders, and its exploitation could lead to significant impacts on the affected systems.

Defensive priority

High

Recommended defensive actions

• Assess exposure of Cisco Meraki products, including Campus Gateway Software, MR Wireless Access Points Software, MV Firmware, and MX Firmware
• Prioritize remediation based on affected versions and products
• Verify inventory of Cisco Meraki products and check for affected versions
• Apply patches or updates provided by Cisco
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability, affected products, and versions. However, the corpus does not establish specific exploitation or impact details, requiring verification from official sources.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.