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PatchSiren cyber security CVE debrief

CVE-2025-7003 Gen Digital CVE debrief

A heap buffer out-of-bounds read vulnerability was discovered in the Avira Antivirus engine. This issue occurs when the engine scans a malformed PDF file, potentially allowing for Local Execution of Code or Denial-of-Service of the antivirus engine process. The vulnerability affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.56. The CVSS score for this vulnerability is 7.8, indicating a High severity level.

Vendor
Gen Digital
Product
Avira Antivirus
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-15
Advisory published
2026-06-12
Advisory updated
2026-06-15

Who should care

Users of Avira Antivirus on Windows, macOS, and Linux with engine builds before 8.3.70.56 should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability is caused by a heap buffer out-of-bounds read issue in the Avira Antivirus engine when scanning a malformed PDF file. This can lead to Local Execution of Code or Denial-of-Service of the antivirus engine process.

Defensive priority

High

Recommended defensive actions

  • Update Avira Antivirus engine to build 8.3.70.56 or later.
  • Ensure that all Avira Antivirus installations are running with the latest engine build.

Evidence notes

The CVE record for CVE-2025-7003 was obtained from the official CVE.org website [cve-org]. Additional information was obtained from the National Vulnerability Database (NVD) [nvd].

Sources and references

Verified primary and authoritative sources

  • CVE-2025-7003 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-7003

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

  • CVE-2025-7003 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-7003

    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.