CVE-2025-8351
highpriority · track · 0EPSS 0.002 · 6 %ileEUEPSS · scored 2026-10-28
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (5)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-8351cnnvd
- https://www.avast.com/en-us/index#pcPatchcnnvd
- https://www.gendigital.com/us/en/contact-us/security-advisories/cnnvd
- https://www.gendigital.com/us/en/contact-us/security-advisories/enisa_euvd
- https://www.gendigital.com/us/en/contact-us/security-advisories/nvd
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