Vulnerability details
CVE-2025-8351
Gen Digital Avira Antivirus
Avira antivirus engine heap buffer OOB read when scanning a malformed file
CVSS 3.1
7.8High
Official description
Heap-based Buffer Overflow, Out-of-bounds Read vulnerability in Avira Antivirus engine when scanning a malformed file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.98.
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 | Avira Antivirus | v < 8.3.70.98 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2025-12-01
- Last updated
- 2026-06-13
- State
- Published
- Assigner (CNA)
- NLOK
Exploit prediction (EPSS)
0.17%
Probability of exploitation in 30 days
7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-122Heap-based Buffer Overflow
- CWE-125Out-of-bounds Read