CVE-2025-7003

Deferred Deferred - Pending Action

Heap Buffer Out-of-Bounds Read in Avira Antivirus Engine

Publication date: 2026-06-12

Last updated on: 2026-06-15

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 8.3.70.56.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-12

Last Modified

2026-06-15

Generated

2026-07-03

AI Q&A

2026-06-13

EPSS Evaluated

2026-07-01

NVD

CVE-2025-7003

EUVD

EUVD-2025-210123

Affected Vendors & Products

Vendor	Product	Version / Range
avira	antivirus	to 8.3.70.56 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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 local execution of code or cause a denial-of-service condition in the antivirus engine process.

Impact Analysis

The vulnerability can impact you by allowing an attacker to execute code locally on your system or cause the antivirus engine to crash, resulting in a denial-of-service.

This could reduce the effectiveness of your antivirus protection and potentially allow malicious activity on your device.

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