CVE-2025-9033
Received Received - Intake
Heap Buffer Out-of-Bounds Read in Avira Antivirus Engine

Publication date: 2026-06-12

Last updated on: 2026-06-12

Assigner: NortonLifeLock Inc.

Description
Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed PDF 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 8.3.70.76.
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Meta Information
Published
2026-06-12
Last Modified
2026-06-12
Generated
2026-06-13
AI Q&A
2026-06-13
EPSS Evaluated
N/A
NVD
CVE-2025-9033
EUVD
EUVD-2025-210135
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
avira antivirus to 8.3.70.76 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability is a heap buffer out-of-bounds read in the Avira Antivirus engine that occurs when scanning a malformed PDF file.

It may allow an attacker to execute code locally or cause a denial-of-service condition in the antivirus engine process.

Impact Analysis

The vulnerability can lead to local execution of code, which means an attacker could potentially run malicious code on your system.

It can also cause a denial-of-service, disrupting the antivirus engine and potentially leaving your system unprotected.

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