# CVE-2025-7017: Avira Antivirus out-of-bounds read in scanning engine

Source: https://junglewise.ai/threats/cve-2025-7017-avira-antivirus-out-of-bounds-read-in-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-2025-7017 · Severity: high · CVSS 7.8 · Published 2026-06-12

Avira Antivirus is a security suite used to protect computers from malware and cyber threats. A vulnerability in its scanning engine could allow a local user to crash the antivirus service or potentially execute unauthorized code by tricking the software into scanning a specially crafted Windows installer (MSI) file. This could lead to a loss of system protection or unauthorized access to the device.

Technologies: [Avira Antivirus Engine](https://junglewise.ai/threats/technologies/antivirus-engine). Vendors: [Avira](https://junglewise.ai/threats/vendors/avira).

## Quick answers

**Is CVE-2025-7017 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-7017 being exploited in the wild.

**How severe is CVE-2025-7017?** High severity, with a CVSS score of 7.8, published 12 June 2026.

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

**Is there a fix for CVE-2025-7017?** 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-2025-7017 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2025-7017?** Check whether you run Avira Antivirus Engine at an affected version. 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 when the engine processes a malformed Windows Installer (MSI) file during a scan. An attacker can exploit this by placing a crafted MSI file on a system where it will be scanned by the engine, potentially leading to a crash of the antivirus process (Denial of Service) or the execution of arbitrary code in the context of the engine. The vulnerability is addressed in engine builds 8.3.70.56 and later. Exploitation requires local access and user interaction (triggering a scan of the malicious file).

## Affected products

- Avira Antivirus engine 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/)

## Related threats

- [Avira Antivirus heap out-of-bounds read in scanning engine](https://junglewise.ai/threats/cve-2025-9032-avira-antivirus-heap-out-of-bounds-read-in-scanning-engine)
- [Avira Antivirus integer overflow in scanning engine](https://junglewise.ai/threats/cve-2025-14098-avira-antivirus-integer-overflow-in-scanning-engine)
- [Avira Antivirus null pointer dereference in scanning engine](https://junglewise.ai/threats/cve-2025-7018-avira-antivirus-null-pointer-dereference-in-scanning-engine)