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PatchSiren cyber security CVE debrief

CVE-2025-7019 Gen Digital CVE debrief

A stack overflow vulnerability exists in Avast Antivirus when scanning a malformed Office Open XML file. This issue may allow a Denial-of-Service (DoS) of the antivirus process. The vulnerability affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25020100. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream, which also feeds other Gen Digital products that embed the same engine. Mitigation is available through this update channel; installations at or above the listed build are not vulnerable, regardless of which product consumes the stream.

Vendor
Gen Digital
Product
Avast Antivirus
CVSS
MEDIUM 5.5
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 Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux who have not updated to virus definition build VPS 25020100 or later should consider updating to prevent potential Denial-of-Service attacks.

Technical summary

The vulnerability is caused by a stack overflow when scanning a malformed Office Open XML file. This can lead to a Denial-of-Service of the antivirus process. The issue has a CVSS score of 5.5 and a severity rating of MEDIUM.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update to virus definition build VPS 25020100 or later to mitigate the vulnerability.
  • Ensure that all installations are running with the latest virus definition updates.

Evidence notes

The CVE record and details were obtained from the official CVE.org and NVD sources. [See ${cve-org} for CVE details and ${nvd} for NVD vulnerability details]. Additional information was obtained from Gen Digital's security advisories [see ${ref-4}].

Sources and references

Verified primary and authoritative sources

  • CVE-2025-7019 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-7019

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

  • CVE-2025-7019 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-7019

    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.