Gen Digital Avast Antivirus on Windows PE File free of memory not on the heap

Summaryinfo

A vulnerability was found in Gen Digital Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One and Avast Business Antivirus on Windows and classified as problematic. Impacted is an unknown function of the component PE File Handler. Executing a manipulation can lead to free of memory not on the heap. This vulnerability appears as CVE-2025-7006. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Gen Digital Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One and Avast Business Antivirus on Windows. This vulnerability affects an unknown code of the component PE File Handler. The manipulation with an unknown input leads to a free of memory not on the heap vulnerability. The CWE definition for the vulnerability is CWE-590. The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc(). As an impact it is known to affect availability. CVE summarizes:

Use of stack memory after free vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25022500. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.

The advisory is available at gendigital.com. This vulnerability was named CVE-2025-7006 since 07/02/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading eliminates this vulnerability. Applying the patch 25022500 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-210126). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Anti-Malware Software

Vendor

• Gen Digital

Name

• Avast Antivirus
• Avast Business Antivirus
• Avast One
• AVG Antivirus
• Norton Antivirus

License

• free

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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