🛡️ CVE-2025-53817 — 7-zip

🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-476 NVD

7.5

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2025-53817 is classified as CWE-476: NULL Pointer Dereference. A pointer that can be null is used without a check, crashing the process.

Affected software

CVE-2025-53817 is recorded against 1 package.

7-zip (fixed in 25.00)

Timeline and source

Published on 17 July 2025 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

securitylab.github.com
www.openwall.com
www.openwall.com

CVE-2025-53817 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity HIGH

CVSS Score 7.5

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE CWE-476

Public Exploit ⚠️ Yes

Source NVD

Published 2025-07-17

Updated 2026-08-11

Modified 2026-06-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
7-zip	—	25.00

References

Exploit, Third Party Advisory https://securitylab.github.com/advisories/GHSL-2025-059_7-Zip/

Exploit, Mailing List https://www.openwall.com/lists/oss-security/2025/07/18/2

http://www.openwall.com/lists/oss-security/2025/07/18/2

🔗 NVD 🔗 Mitre

Similar Threats

Exploit Protection

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