CVE-2025-9033: CWE-125 Out-of-bounds Read in Gen Digital Avira Antivirus
CVE-2025-9033 is a heap buffer out-of-bounds read vulnerability in the Avira Antivirus engine that occurs when scanning a malformed PDF file. This flaw may allow local attackers to execute code or cause a denial-of-service condition in the antivirus engine process. The vulnerability affects Avira Antivirus engine builds prior to version 8.3.70.76 on Windows, macOS, and Linux platforms. The vulnerability has a high severity with a CVSS score of 7.8. No official patch or remediation information is currently available.
AI Analysis
Technical Summary
This vulnerability (CVE-2025-9033) involves a heap buffer out-of-bounds read in the Avira Antivirus engine when processing malformed PDF files. Successful exploitation could lead to local code execution or denial-of-service against the antivirus engine process. It affects engine builds before 8.3.70.76 on Windows, macOS, and Linux. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is provided, and no known exploits are reported in the wild.
Potential Impact
An attacker with local access could exploit this vulnerability by providing a specially crafted PDF file to the antivirus engine, potentially resulting in arbitrary code execution or crashing the antivirus process, thereby disrupting its protective functionality. This impacts confidentiality, integrity, and availability of the affected system's security posture.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid scanning untrusted or malformed PDF files locally and monitor vendor communications for updates.
CVE-2025-9033: CWE-125 Out-of-bounds Read in Gen Digital Avira Antivirus
Description
CVE-2025-9033 is a heap buffer out-of-bounds read vulnerability in the Avira Antivirus engine that occurs when scanning a malformed PDF file. This flaw may allow local attackers to execute code or cause a denial-of-service condition in the antivirus engine process. The vulnerability affects Avira Antivirus engine builds prior to version 8.3.70.76 on Windows, macOS, and Linux platforms. The vulnerability has a high severity with a CVSS score of 7.8. No official patch or remediation information is currently available.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-9033) involves a heap buffer out-of-bounds read in the Avira Antivirus engine when processing malformed PDF files. Successful exploitation could lead to local code execution or denial-of-service against the antivirus engine process. It affects engine builds before 8.3.70.76 on Windows, macOS, and Linux. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is provided, and no known exploits are reported in the wild.
Potential Impact
An attacker with local access could exploit this vulnerability by providing a specially crafted PDF file to the antivirus engine, potentially resulting in arbitrary code execution or crashing the antivirus process, thereby disrupting its protective functionality. This impacts confidentiality, integrity, and availability of the affected system's security posture.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid scanning untrusted or malformed PDF files locally and monitor vendor communications for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GEN
- Date Reserved
- 2025-08-14T11:15:45.781Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2c8e3ee617e2d834d0f242
Added to database: 6/12/2026, 10:54:54 PM
Last enriched: 6/12/2026, 11:09:31 PM
Last updated: 6/13/2026, 12:06:12 AM
Views: 6
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