EUVD-2025-200018

| CVE-2025-3500 CRITICAL
2025-12-01 [email protected]
9.0
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 15, 2026 - 13:34 vuln.today
EUVD ID Assigned
Mar 15, 2026 - 13:34 euvd
EUVD-2025-200018
CVE Published
Dec 01, 2025 - 16:15 nvd
CRITICAL 9.0

Tags

Privilege Escalation Integer Overflow Microsoft Antivirus Windows

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.

Analysis

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.

Technical Context

An integer overflow occurs when an arithmetic operation produces a value that exceeds the maximum (or minimum) size of the integer type used to store it. This vulnerability is classified as Integer Overflow or Wraparound (CWE-190).

Affected Products

Affected products: Avast Antivirus

Remediation

Use safe integer arithmetic libraries. Check for overflow conditions before operations. Use appropriately sized integer types.

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +45
POC: 0

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EUVD-2025-200018 vulnerability details – vuln.today
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