# CVE-2025-7003: Avira Antivirus out-of-bounds read in PDF scanning engine

Source: https://junglewise.ai/threats/cve-2025-7003-avira-antivirus-out-of-bounds-read-in-pdf-scanning-engine  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-12. Updated: 2026-06-12  
License: CC BY 4.0 with a link back

CVE-2025-7003 · Severity: high · CVSS 7.8 · Published 2026-06-12

Avira Antivirus is a security suite used to protect Windows, macOS, and Linux systems from malware. A vulnerability in the scanning engine allows a specially crafted PDF file to crash the antivirus service or potentially allow unauthorized code execution. This could lead to a loss of protection on the affected device or allow an attacker to gain further control over the system if a user is tricked into opening or scanning the malicious file.

## Quick answers

**Is CVE-2025-7003 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-7003 being exploited in the wild.

**How severe is CVE-2025-7003?** High severity, with a CVSS score of 7.8, published 12 June 2026.

**Which products and versions are affected?** Avira Antivirus engine builds before 8.3.70.56.

**Is there a fix for CVE-2025-7003?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-7003 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2025-7003?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A heap-based out-of-bounds read vulnerability (CWE-125) exists in the Avira Antivirus engine across Windows, macOS, and Linux platforms. The flaw is triggered during the parsing and scanning of malformed PDF documents. While the attack vector is classified as local, it requires a user to interact with a malicious file (UI:R), such as downloading or attempting to scan it. Successful exploitation can result in a denial-of-service (DoS) by crashing the antivirus engine process or potentially achieving local code execution. The issue is resolved in engine builds 8.3.70.56 and later.

## Affected products

- Avira Antivirus engine builds before 8.3.70.56

## Timeline

- 2026-06-12: disclosed
- 2026-06-12: advisory

## References

- [https://www.gendigital.com/us/en/contact-us/security-advisories/](https://www.gendigital.com/us/en/contact-us/security-advisories/)