What’s Vulnerable › Vulnerabilities

CVE-2025-7019: Avast antivirus stack overflow when scanning a malformed Office Open XML file

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-12 · updated 2026-10-07
• Weakness: CWE-121

Description

Stack overflow vulnerability in Avast Antivirus when scanning a malformed Office Open XML file may allow Denial-of-Service of the antivirus process. This issue 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. 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.

Affected products

• Gen Digital Avast Antivirus: before 25020100 — fixed in 25020100
• Gen Digital Avast Business Antivirus: before 25020100 — fixed in 25020100
• Gen Digital Avast One: before 25020100 — fixed in 25020100
• Gen Digital AVG Antivirus: before 25020100 — fixed in 25020100
• Gen Digital Norton Antivirus: before 25020100 — fixed in 25020100

How to fix

Upgrade to a fixed version: Gen Digital Avast Antivirus 25020100; Gen Digital Avast Business Antivirus 25020100; Gen Digital Avast One 25020100; Gen Digital AVG Antivirus 25020100; Gen Digital Norton Antivirus 25020100. Check the vendor advisory for mitigations.

References

• https://www.gendigital.com/us/en/contact-us/security-advisories/

Get alerted when CVE-2025-7019 or the next vulnerability affects your stack