01 Record
CVE-2025-8351
Avira antivirus engine heap buffer OOB read when scanning a malformed file
HighPUBLISHEDCNA: NLOK
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
02 Description
Avira antivirus engine heap buffer OOB read when scanning a malformed file
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.16% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 5.4% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2025-12-01 15:51Z11 MO AGO
- Last updated
- 2026-06-12 22:32Z4 MO AGO
- Reserved
- 2025-07-30
- Assigning CNA
- NLOK
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 93d6123bc6e5f507a9113905132772df14aea68d1540d63e42246159c82876fa
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.gendigital.comhttps://www.gendigital.com/us/en/contact-us/security-advisories/
07 Remediation
Upgrade to Avira scan engine build 8.3.70.98 or any later engine release. Builds at or above 8.3.70.98 include the fix.