CVE-2025-61143 Null dereference in n/a
A NULL pointer dereference in libtiff allows attackers to cause a denial of service via crafted TIFF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-61143?
CVE-2025-61143 is a medium-severity vulnerability in Libtiff Libtiff, published on 23 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
libtiff up to v4.7.1 was discovered to contain a NULL pointer dereference via the component libtiff/tif_open.c.
Weakness: CWE-476
Which versions are affected by CVE-2025-61143?
It affects 1 product.
Products include Libtiff Libtiff.
How do I fix CVE-2025-61143?
Upgrade to a fixed version.
Is CVE-2025-61143 being exploited?
There is no known exploitation of CVE-2025-61143 in the wild and no public exploit code.
Other vulnerabilities in Libtiff Libtiff
Sources
Also known as AZL-78308, AZL-78327, BELL-CVE-2025-61143, CLSA-2026-1773051259, CLSA-2026-1774273237, DEBIAN-CVE-2025-61143 and 8 more.