{"id":"CVE-2025-3500","aliases":["EUVD-2025-200018","GHSA-28rh-r6hp-jmq3"],"status":"published","title":"Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation","description":"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.","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00476,"percentile":0.41371,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-190"],"published":"2025-12-01T16:09:00Z","modified":"2026-09-26T00:10:00Z","exploits":[{"source":"pocgithub","id":"chicken3962/CVE-2025-3500-Poc","title":"chicken3962/CVE-2025-3500-Poc","date":"2025-12-01","url":"https://github.com/chicken3962/CVE-2025-3500-Poc"}],"products":[{"vendor":"avast","product":"antivirus"}],"references":[{"url":"https://www.gendigital.com/us/en/contact-us/security-advisories/","tags":["Not Applicable"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3500"},{"url":"https://www.gendigital.com/us/en/contact-us/security-advisories"},{"url":"https://github.com/advisories/GHSA-28rh-r6hp-jmq3"}],"sources":{"cve":[{"id":"CVE-2025-3500","title":"Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation","description":"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.","status":"published","published":"2025-12-01T16:09:00.428Z","modified":"2026-02-26T16:57:50.209Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:32:39.378527Z"}],"euvd":[{"id":"EUVD-2025-200018","description":"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.","status":"published","published":"2025-12-01T16:09:00Z","modified":"2026-02-26T16:57:50Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:48:24.208942Z"}],"ghsa":[{"id":"GHSA-28rh-r6hp-jmq3","title":"Integer Overflow or Wraparound vulnerability in Avast Antivirus (25.1.981.6) on Windows allows...","description":"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.","status":"published","published":"2025-12-01T18:30:37Z","modified":"2025-12-01T18:30:45Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:04:59.670278Z"}],"nvd":[{"id":"CVE-2025-3500","description":"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.","status":"published","published":"2025-12-01T16:15:53.023Z","modified":"2026-09-26T00:10:00.127Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:11:46.94029Z"}]}}