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CVE-2025-7006— Avast antivirus use of stack memory after free when scanning a malformed PE file

CVSS 5.5 · Medium EPSS 0.11% · P2

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 5

VendorProductVersion RangeStatus
Gen DigitalAvast Antivirus< 25022500affected
Gen DigitalAvast Business Antivirus< 25022500affected
Gen DigitalAvast One< 25022500affected
Gen DigitalAVG Antivirus< 25022500affected
Gen DigitalNorton Antivirus< 25022500affected
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I. Basic Information for CVE-2025-7006

Vulnerability Information
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Vulnerability Title
Avast antivirus use of stack memory after free when scanning a malformed PE file
Source: NVD (National Vulnerability Database)
Vulnerability Description
Use of stack memory after free vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25022500. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放并不在堆上的内存
Source: NVD (National Vulnerability Database)
Vulnerability Title
Gen Digital Avast Antivirus 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gen Digital Avast Antivirus是美国Gen Digital公司的一个防病毒与网络安全软件。 Gen Digital Avast Antivirus存在资源管理错误漏洞，该漏洞源于栈内存释放后重用，可能导致扫描畸形Windows PE文件时防病毒进程拒绝服务。
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)

Affected Products

VendorProductAffected VersionsCPESubscribe
Gen DigitalAvast Antivirus 0 ~ 25022500 -
Gen DigitalAVG Antivirus 0 ~ 25022500 -
Gen DigitalNorton Antivirus 0 ~ 25022500 -
Gen DigitalAvast One 0 ~ 25022500 -
Gen DigitalAvast Business Antivirus 0 ~ 25022500 -

II. Public POCs for CVE-2025-7006

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III. Intelligence Information for CVE-2025-7006

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Same Patch Batch · Gen Digital · 2026-06-12 · 17 CVEs total

CVE-2026-66767.8 HIGHAvira antivirus engine heap buffer OOB write when scanning a malformed POSIX tar archive
CVE-2025-70037.8 HIGHAvira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 1)
CVE-2025-70027.8 HIGHAvira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 2)
CVE-2025-70087.8 HIGHAvast antivirus heap buffer OOB read when scanning a malformed PE file
CVE-2025-70097.8 HIGHAvast antivirus heap buffer OOB read when scanning a malformed PE file
CVE-2025-70177.8 HIGHAvira antivirus engine heap buffer OOB read when scanning a malformed Windows MSI file
CVE-2025-70047.8 HIGHAvast antivirus heap buffer OOB write when scanning a malformed PE file
CVE-2025-70117.8 HIGHAvast antivirus heap OOB when scanning a malformed zip file
CVE-2025-90327.8 HIGHAvira antivirus engine heap buffer OOB read when scanning a malformed PE file
CVE-2025-90337.8 HIGHAvira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 3)
CVE-2025-140987.8 HIGHAvira antivirus engine heap buffer OOB write when scanning a malformed MS-DOS executable f
CVE-2026-120687.4 HIGHAvira Password Manager credential disclosure via cross-origin autofill in Firefox
CVE-2025-70105.5 MEDIUMAvast antivirus stack overflow when scanning a malformed PDF file
CVE-2025-70055.5 MEDIUMAvast antivirus infinite recursion when scanning a malformed PE file
CVE-2025-70185.5 MEDIUMAvira antivirus engine null pointer dereference when scanning a malformed PE file
CVE-2025-70195.5 MEDIUMAvast antivirus stack overflow when scanning a malformed Office Open XML file

IV. Related Vulnerabilities

Same product: Avast Antivirus
Same vendor: Gen Digital
Same weakness: CWE-590

V. Comments for CVE-2025-7006

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