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7-Zip

7-Zip is a file archiver with a high compression ratio.7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

CVE-2025-53817 identifies a null pointer dereference vulnerability (CWE-476) in the ipavlov 7-Zip file archiver prior to version 25.0.0. The flaw exists in the Compound Document handler component, which is responsible for extracting files from Compound Document formats. When processing a specially crafted archive, the handler may dereference a null pointer, causing the application to crash and resulting in a denial of service condition. This vulnerability does not require authentication or user interaction but does require local access to the vulnerable application to trigger. The CVSS v4.0 base score is 5.5 (medium), reflecting a locally exploitable DoS with no impact on confidentiality, integrity, or availability beyond the application crash. No known exploits have been reported in the wild, and the issue was fixed in 7-Zip version 25.0.0. The vulnerability primarily affects systems that use 7-Zip for extracting Compound Documents, which are common in office and enterprise environments. The flaw could be exploited by an attacker who can supply malicious archive files to a user or system running a vulnerable version, causing service interruptions or application crashes. The fix involves proper null pointer checks and error handling in the Compound handler code to prevent dereferencing null pointers.

Detailed information about CVE-2025-53817: CWE-476: NULL Pointer Dereference in ipavlov 7-Zip affecting ipavlov 7-Zip. Get real-time updates, technical details,

CVE-2025-53817: CWE-476: NULL Pointer Dereference in ipavlov 7-Zip - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-53817: CWE-476: NULL Pointer Dereference in ipavlov 7-Zip

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