CVE-2025-3500 json
Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
published 11mo ago modified last mo. also EUVD-2025-200018
- cvss
- 9.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
Integer Overflow or Wraparound vulnerability in Avast Antivirus (25.1.981.6) on Windows allows Privilege Escalation.This issue affects Antivirus: from 25.1.981.6 before 25.3.
Patch / fix
- Avast Antivirus 25.3
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 11mo ago
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Avast Antivirus
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
gendigital.com
/us/en/contact-us/security-advisories/
not-applicable
Sources
- CVE List CVE-2025-3500
- NVD CVE-2025-3500
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