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CVE-2025-14098— Avira antivirus engine heap buffer OOB write when scanning a malformed MS-DOS executable file

CVSS 7.8 · High EPSS 0.01% · P3

Affected Version Matrix 1

VendorProductVersion RangeStatus
Gen DigitalAvira Antivirus< 8.3.70.104affected
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I. Basic Information for CVE-2025-14098

Vulnerability Information
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Vulnerability Title
Avira antivirus engine heap buffer OOB write when scanning a malformed MS-DOS executable file
Source: NVD (National Vulnerability Database)
Vulnerability Description
Heap buffer out-of-bounds write vulnerability due to integer overflow in Avira Antivirus engine when scanning a malformed MS-DOS executable file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.104.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Gen DigitalAvira Antivirus 0 ~ 8.3.70.104 -

II. Public POCs for CVE-2025-14098

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III. Intelligence Information for CVE-2025-14098

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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-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
CVE-2025-70195.5 MEDIUMAvast antivirus stack overflow when scanning a malformed Office Open XML file

IV. Related Vulnerabilities

Same product: Avira Antivirus
Same vendor: Gen Digital
Same weakness: CWE-787

V. Comments for CVE-2025-14098

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