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PatchSiren cyber security CVE debrief

CVE-2026-76470 Cisco CVE debrief

A Cisco Meraki software hardening release addresses multiple internally discovered vulnerabilities, including CVE-2026-76470, related to incorrect calculation issues grouped under CWE-682. The vulnerabilities affect various Cisco Meraki products, including MR Wireless Access Points Software, MV Firmware, and MX Firmware. This release is part of Cisco's ongoing commitment to proactive security and product quality. The comprehensive internal security review resulted in the identification of several vulnerabilities, which have been addressed through this software hardening release.

Vendor
Cisco
Product
Cisco Campus Gateway Software
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-07
Original CVE updated
2026-10-07
Advisory published
2026-10-07
Advisory updated
2026-10-07

Who should care

Defenders responsible for Cisco Meraki deployments should assess exposure and prioritize updates for affected versions. This includes reviewing the vulnerability's impact on their specific deployments and taking steps to mitigate potential security risks. Security teams should also monitor for potential security incidents related to CVE-2026-76470.

Why it matters

CVE-2026-76470 is a high-severity vulnerability in Cisco Meraki products that requires verification of exposure and prompt updates to affected versions.

  • Verify exposure in Cisco Meraki deployments
  • Update affected versions to prevent potential security risks
  • Monitor for potential security incidents related to CVE-2026-76470

Technical summary

CVE-2026-76470 is related to incorrect calculation issues in Cisco Meraki products, including MR Wireless Access Points Software, MV Firmware, and MX Firmware. The vulnerability is grouped under CWE-682 and has a CVSS score of 8.8. It requires verification of exposure and prompt updates to affected versions to prevent potential security risks. The vulnerability's impact can be mitigated by applying updates and reviewing compensating controls for exposed systems. Defenders should prioritize verifying exposure in their Cisco Meraki deployments and updating affected versions.

Defensive priority

Defenders should prioritize verifying exposure in their Cisco Meraki deployments and updating affected versions.

Recommended defensive actions

  • Verify exposure in Cisco Meraki deployments
  • Update affected MR Wireless Access Points Software versions
  • Update affected MV Firmware versions
  • Update affected MX Firmware versions
  • 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 Cisco security advisory provide details on the vulnerability and affected products. The Cisco security advisory offers guidance on verifying exposure and applying updates. Defenders should review these sources to understand the vulnerability's impact and recommended actions. The CVE record was published on 2026-10-07T16:19:34.043Z and has not been modified since then.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76470 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76470

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-76470 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76470

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.