NULL pointer dereference in 7-Zip - CVE-2025-53817

Vulnerability identifier: #VU118787

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2025-53817

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
7-Zip
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
Basesystem Module
openSUSE Leap
p7zip
p7zip-full-debuginfo
p7zip-full
p7zip-debugsource
p7zip-doc

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error  in the Compound handler. A remote attacker can trick the victim into opening a specially crafted archive and crash the application. 

Install update from vendor's website.

• https://securitylab.github.com/advisories/GHSL-2025-059_7-Zip/
• https://www.openwall.com/lists/oss-security/2025/07/18/2
• http://www.openwall.com/lists/oss-security/2025/07/18/2