PatchSiren cyber security CVE debrief

CVE-2025-7017 Gen Digital CVE debrief

A heap buffer out-of-bounds read vulnerability was discovered in the Avira Antivirus engine when scanning a malformed Windows MSI file. This issue, tracked as CVE-2025-7017, may allow 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: 2026-06-12
Advisory published: 2026-06-12
Advisory updated: 2026-06-12

Who should care

Users of Avira Antivirus on Windows, macOS, and Linux with engine builds before 8.3.70.56 should apply the necessary updates to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a heap buffer out-of-bounds read in the Avira Antivirus engine when processing a malformed Windows MSI file. This could potentially lead to local code execution or a denial-of-service condition.

Defensive priority

High

Recommended defensive actions

Update Avira Antivirus to engine build 8.3.70.56 or later.

Evidence notes

The CVE record and details were obtained from official sources.

Official resources

CVE-2025-7017 was published on 2026-06-12T22:16:49.343Z and has not been modified since then.