What is CVE-2025-53817?

CVE-2025-53817 is a high-severity vulnerability in 7-Zip, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-07-17.

How severe is CVE-2025-53817?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in 7-Zip

CVE-2025-53817

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.

EPSS: 0.006 (45.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

7-zip
Ipavlov 7-zip — versions < 25.0.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
security-advisories@github.com (Exploit, Mailing List, x_refsource_MISC)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2025-53817?: CVE-2025-53817 is a high-severity vulnerability in 7-Zip, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-07-17.
How severe is CVE-2025-53817?: High severity. CVSS v3 base score is 7.5 out of 10.