01 Record
CVE-2025-3500
Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
CriticalPUBLISHEDCNA: NLOK
CNA base score9.0 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
02 Description
Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
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
- 0.45% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 39.4% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-09-26.
- 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 16:09Z11 MO AGO
- Last updated
- 2026-02-26 16:57Z8 MO AGO
- Reserved
- 2025-04-10
- Assigning CNA
- NLOK
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.0)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-190Integer Overflow or WraparoundBase
- Data version
- 5.2
- Document digest
- 7d5daed6119dd87dd8296aef622407efd7bdaa106900053532a2ff8297c64b63
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.gendigital.comhttps://www.gendigital.com/us/en/contact-us/security-advisories/
07 Remediation
Upgrade to version 25.3 (or newer) released 01/APR/2025