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PatchSiren cyber security CVE debrief

CVE-2025-7011 Gen Digital CVE debrief

A heap out-of-bounds read vulnerability exists in Avast Antivirus when scanning a malformed zip file containing XML. This issue may allow for Local Execution of Code or Denial-of-Service 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 from 25020100 before 25021208.

Vendor
Gen Digital
Product
Avast 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 Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux with virus definition builds from 25020100 before 25021208 should apply the necessary updates to mitigate this vulnerability.

Technical summary

The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.

Defensive priority

HIGH

Recommended defensive actions

  • Update virus definitions to build 25021208 or later.
  • Ensure that the antivirus software is configured to receive automatic updates.

Evidence notes

The CVE-2025-7011 vulnerability has a CVSS score of 7.8 and is considered HIGH severity. The vulnerability was published on June 12, 2026.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-7011 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-7011

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

  • CVE-2025-7011 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-7011

    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.