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CVE-2025-7019— Avast antivirus stack overflow when scanning a malformed Office Open XML file

CVSS 5.5 · Medium EPSS 0.11% · P2

Affected Version Matrix 5

VendorProductVersion RangeStatus
Gen DigitalAvast Antivirus< 25020100affected
Gen DigitalAvast Business Antivirus< 25020100affected
Gen DigitalAvast One< 25020100affected
Gen DigitalAVG Antivirus< 25020100affected
Gen DigitalNorton Antivirus< 25020100affected
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I. Basic Information for CVE-2025-7019

Vulnerability Information
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Vulnerability Title
Avast antivirus stack overflow when scanning a malformed Office Open XML file
Source: CVE Program / CVE List V5
Vulnerability Description
Stack overflow vulnerability in Avast Antivirus when scanning a malformed Office Open XML 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 25020100. 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Gen Digital Avast Antivirus 缓冲区错误漏洞
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存在缓冲区错误漏洞，该漏洞源于扫描恶意Office Open XML文件时存在栈缓冲区溢出，可能导致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 ~ 25020100 -
Gen DigitalAVG Antivirus 0 ~ 25020100 -
Gen DigitalNorton Antivirus 0 ~ 25020100 -
Gen DigitalAvast One 0 ~ 25020100 -
Gen DigitalAvast Business Antivirus 0 ~ 25020100 -

II. Public POCs for CVE-2025-7019

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III. Intelligence Information for CVE-2025-7019

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

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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
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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-2025-70065.5 MEDIUMAvast antivirus use of stack memory after free when scanning a malformed PE file
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

IV. Related Vulnerabilities

Same product: Avast Antivirus
Same vendor: Gen Digital
Same weakness: CWE-121

V. Comments for CVE-2025-7019

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