CVE-2025-7009
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
CVE-2025-7009 describes a heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Windows PE file, which may allow Local Execution of Code or Denial-of-Service of the antivirus process.
Risk Assessment
This issue may lead to potential system compromise or disruption of antivirus functionality, increasing the risk of malware infections.
Recommendation
It is recommended to update the antivirus software to version VPS 25021310 or later to mitigate the risk associated with this vulnerability.
Original NVD description (English source)
Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Local Execution of Code or 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 25021310. 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.