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PatchSiren cyber security CVE debrief

CVE-2026-78807 wpa_supplicant CVE debrief

A local attacker can bypass proper network context and AKMP matching for PMKSA caching in wpa_supplicant versions before v.2.12 due to missing validation in the driver-based PMKSA selection path. This vulnerability allows for potential unauthorized access to network resources. Network administrators and security teams should verify and apply patches for versions before v.2.12, review network configurations, and monitor for local attacks. The CVE record and NVD entry provide details on the vulnerability, but further verification is required for affected versions and potential impact.

Vendor
wpa_supplicant
Product
wpa_supplicant
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-11
Original CVE updated
2026-09-11
Advisory published
2026-09-11
Advisory updated
2026-09-11

Who should care

Network administrators and security teams responsible for managing wpa_supplicant installations should verify and apply patches for versions before v.2.12.

Why it matters

CVE-2026-78807 allows local attackers to bypass network context and AKMP matching for PMKSA caching in wpa_supplicant versions before v.2.12. Network administrators and security teams should verify and apply patches, review network configurations, and monitor for local attacks.

  • Local attackers can bypass network context and AKMP matching for PMKSA caching
  • Potential unauthorized access to network resources
  • Need to verify and apply patches for wpa_supplicant versions before v.2.12
  • Further verification required for affected versions and potential impact

Technical summary

The vulnerability in wpa_supplicant versions before v.2.12 allows a local attacker to bypass proper network context and AKMP matching for PMKSA caching via missing validation in the driver-based PMKSA selection path in wpa.c. This issue arises from the lack of validation in the driver-based PMKSA selection path, which can lead to unauthorized access. Affected systems require patches to be applied to prevent exploitation.

Defensive priority

Verify and apply patches for wpa_supplicant versions before v.2.12

Recommended defensive actions

  • Verify wpa_supplicant version and apply patches for versions before v.2.12
  • Review network configurations for potential exposure
  • Monitor for local attacks on wpa_supplicant

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in wpa_supplicant. However, the scope of affected versions and potential impact require further verification.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-78807 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-78807

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

  • CVE-2026-78807 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-78807

    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.