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CVE-2025-3500— Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation

Quick assessment

Affected
Avast Antivirus
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Avast Antivirus是捷克Avast公司的一套杀毒软件。 Avast Antivirus存在安全漏洞，该漏洞源于整数溢出可能导致拒绝服务或执行任意代码。

CVSS 9.0 · Critical EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2025-3500

Vulnerability Information
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Vulnerability Title
Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
Avast Antivirus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Avast Antivirus是捷克Avast公司的一套杀毒软件。 Avast Antivirus存在安全漏洞，该漏洞源于整数溢出可能导致拒绝服务或执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Avast Antivirus 25.1.981.6 ~ 25.3 -

II. Public POCs for CVE-2025-3500

# POC Description Source Link Shenlong Link
1 Public exploit for CVE-2025-3500 https://github.com/chicken3962/CVE-2025-3500-Poc POC Details
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III. Intelligence Information for CVE-2025-3500

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IV. Related Vulnerabilities

Same product: Antivirus
Same vendor: Avast
Same weakness: CWE-190

V. Comments for CVE-2025-3500

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