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VulnerabilityPublished Updated

CVE-2025-7009: Gen Digital Avast Antivirus · Out-of-bounds Read

Affects Gen Digital Avast AntivirusSource CVE Database V5

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Not known to be exploited · CVSS 7.8 High.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Gen DigitalAvast AntivirusAffected
  • =0
Fixed in–
Gen DigitalAVG AntivirusAffected
  • =0
Fixed in–
Gen DigitalNorton AntivirusAffected
  • =0
Fixed in–
Gen DigitalAvast OneAffected
  • =0
Fixed in–
Gen DigitalAvast Business AntivirusAffected
  • =0
Fixed in–

AI-suggested

Updating virus definitions to version VPS 25021310 or later fully mitigates this vulnerability. Since the scanning engine is updated via the virus definition update stream, ensuring antivirus products receive and apply these updates is critical.

Description

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.

References

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