Vulnerability details
CVE-2025-7009
Avast antivirus heap buffer OOB read when scanning a malformed PE file
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (GEN) | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Gen Digital | AVG Antivirus | v < 25021310 | CVEProject cvelistV5 (CNA) |
| Gen Digital | Avast Antivirus | v < 25021310 | CVEProject cvelistV5 (CNA) |
| Gen Digital | Avast Business Antivirus | v < 25021310 | CVEProject cvelistV5 (CNA) |
| Gen Digital | Avast One | v < 25021310 | CVEProject cvelistV5 (CNA) |
| Gen Digital | Norton Antivirus | v < 25021310 | CVEProject cvelistV5 (CNA) |
References and advisories
1Details
- Published
- 2026-06-13
- Last updated
- 2026-06-15
- State
- Published
- Assigner (CNA)
- GEN
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-125Out-of-bounds Read