# CVE-2025-7018: Avira Antivirus null pointer dereference in scanning engine

Source: https://junglewise.ai/threats/cve-2025-7018-avira-antivirus-null-pointer-dereference-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-2025-7018 · Severity: medium · CVSS 5.5 · 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 specially crafted file to crash the antivirus software when it is scanned. This results in a denial-of-service, leaving the system temporarily unprotected until the antivirus process is restarted.

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

## Quick answers

**Is CVE-2025-7018 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-7018 being exploited in the wild.

**How severe is CVE-2025-7018?** Medium severity, with a CVSS score of 5.5, published 12 June 2026.

**Which products and versions are affected?** Avira Antivirus Engine before 8.3.70.64.

**Is there a fix for CVE-2025-7018?** 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-2025-7018 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2025-7018?** 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 NULL pointer dereference (CWE-476) exists in the Avira Antivirus engine across Windows, macOS, and Linux platforms. The vulnerability is triggered when the engine attempts to parse a malformed Windows Portable Executable (PE) file during a scan. An attacker can exploit this by providing a crafted PE file that, when processed, causes the antivirus engine process to crash (Denial-of-Service). The attack requires the file to be scanned, typically involving some level of user interaction or automated system activity. The issue is resolved in engine builds 8.3.70.64 and later.

## Affected products

- Avira Antivirus engine before 8.3.70.64

## Timeline

- 2026-06-12: advisory: NVD publication date
- 2026-06-12: disclosed: Initial disclosure by NortonLifeLock Inc. (Gen Digital)

## 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 out-of-bounds read in scanning engine](https://junglewise.ai/threats/cve-2025-7017-avira-antivirus-out-of-bounds-read-in-scanning-engine)