CVE-2025-8534 libtiff tiff2ps tiff2ps.c PS_Lvl2page null pointer dereference
A local attacker can cause a denial of service via null pointer dereference in libtiff's tiff2ps tool when specific options are enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-8534?
CVE-2025-8534 is a low-severity vulnerability in Libtiff Libtiff, published on 4 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability classified as problematic was found in libtiff 4.6.0. This vulnerability affects the function PS_Lvl2page of the file tools/tiff2ps.c of the component tiff2ps. The manipulation leads to null pointer dereference. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The name of the patch is 6ba36f159fd396ad11bf6b7874554197736ecc8b. It is recommended to apply a patch to fix this issue. One of the maintainers explains, that "[t]his error only occurs if DEFER_STRILE_LOAD (defer-strile-load:BOOL=ON) or TIFFOpen( .. "rD") option is used."
Which versions are affected by CVE-2025-8534?
It affects 1 product.
Products include Libtiff Libtiff.
How do I fix CVE-2025-8534?
Apply the vendor's patch.
Is CVE-2025-8534 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8534 exists.
Other vulnerabilities in Libtiff Libtiff
Sources
Also known as AZL-66078, AZL-66095, BELL-CVE-2025-8534, DEBIAN-CVE-2025-8534, ECHO-eac8-8550-89f3, GHSA-xgh3-993q-r2x8 and 6 more.