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PatchSiren cyber security CVE debrief

CVE-2026-45531 Google CVE debrief

A high-severity CVE-2026-45531 vulnerability exists in Google Android due to a possible out of bounds read via a heap buffer overflow in fsck.c. Local escalation of privilege is possible without additional execution privileges needed. User interaction is not required for exploitation. The vulnerability has a CVSS score of 7.8 and is classified as HIGH. Android system administrators and security teams should assess exposure and prioritize remediation to prevent potential unauthorized access and data breaches.

Vendor
Google
Product
Android
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-23
Advisory published
2026-09-08
Advisory updated
2026-09-23

Who should care

Android system administrators and security teams should assess exposure and prioritize remediation to prevent potential unauthorized access and data breaches. They should review and apply patches from the vendor advisory, conduct a thorough inventory of affected systems, and implement compensating controls to mitigate potential impact.

Why it matters

CVE-2026-45531 is a high-severity vulnerability in Google Android that allows for local escalation of privilege. Android system administrators and security teams should assess exposure and prioritize remediation to prevent potential unauthorized access and data breaches.

  • Local escalation of privilege could lead to unauthorized access
  • Potential for data breaches or system compromise
  • Requires immediate patching and verification

Technical summary

A heap buffer overflow in fsck.c could lead to local escalation of privilege. The vulnerability has a CVSS score of 7.8 and is classified as HIGH. It affects Google Android and requires immediate patching and verification. The vulnerability allows for local escalation of privilege without additional execution privileges needed. User interaction is not required for exploitation.

Defensive priority

Immediate

Recommended defensive actions

  • Review and apply patches from the vendor advisory
  • Conduct a thorough inventory of affected systems
  • Implement compensating controls to mitigate potential impact

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, specific version information and remediation steps are limited. The vulnerability affects Google Android and has a CVSS score of 7.8. There are no known exploits in the wild, but immediate patching is recommended. Defenders should verify affected scope, severity, and vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45531 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45531

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

  • CVE-2026-45531 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45531

    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.