NULL pointer dereference in Libtiff

CVE-2025-61143

libtiff up to v4.7.1 was discovered to contain a NULL pointer dereference via the component libtiff/tif_open.c.

EPSS: 0.001 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Libtiff
N/a — versions n/a

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

cve@mitre.org (Issue Tracking)
cve@mitre.org (Issue Tracking)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-61143?: CVE-2025-61143 is a medium-severity vulnerability in Libtiff, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-02-23.
How severe is CVE-2025-61143?: Medium severity. CVSS v3 base score is 5.5 out of 10.