CVE-2025-14098
Description
Integer overflow in Avira Antivirus engine (before 8.3.70.104) leads to heap buffer out-of-bounds write when scanning a malformed MS-DOS executable, enabling local code execution or denial-of-service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Integer overflow in Avira Antivirus engine (before 8.3.70.104) leads to heap buffer out-of-bounds write when scanning a malformed MS-DOS executable, enabling local code execution or denial-of-service.
Vulnerability
A heap buffer out-of-bounds write vulnerability exists in the Avira Antivirus engine due to an integer overflow when scanning a malformed MS-DOS executable file. This affects engine builds before 8.3.70.104 on Windows, macOS, and Linux. [1]
Exploitation
An attacker can craft a malformed MS-DOS executable that, when scanned by the Avira engine, triggers an integer overflow leading to a heap buffer out-of-bounds write. The attacker requires local access to the system and the ability to present the malicious file for scanning (e.g., via user interaction or automatic scanning). No authentication is needed beyond local access. [1]
Impact
Successful exploitation can result in local execution of arbitrary code or denial-of-service of the antivirus engine process. The attacker may achieve code execution in the context of the engine, potentially leading to system compromise. [1]
Mitigation
The vulnerability is fixed in engine version 8.3.70.104 and later. Users should update their Avira Antivirus to the latest version. No workaround is available. [1]
AI Insight generated on Jun 12, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1- Range: <8.3.70.104
Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
1News mentions
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