CVE-2023-26965 Use after free in n/a
A heap-based use-after-free in LibTIFF allows attackers to execute arbitrary code or cause denial of service via crafted TIFF images.
- 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-2023-26965?
CVE-2023-26965 is a medium-severity use after free vulnerability in Libtiff Libtiff, published on 14 Jun 2023. 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
loadImage() in tools/tiffcrop.c in LibTIFF through 4.5.0 has a heap-based use after free via a crafted TIFF image.
Weakness: CWE-787
Which versions are affected by CVE-2023-26965?
It affects 1 product.
Products include Libtiff Libtiff.
How do I fix CVE-2023-26965?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-26965 being exploited?
There is no known exploitation of CVE-2023-26965 in the wild and no public exploit code.
Other vulnerabilities in Libtiff Libtiff
Sources
Also known as AZL-27165, BELL-CVE-2023-26965, DEBIAN-CVE-2023-26965, GHSA-w5rm-7jx3-m7m4, JLSEC-2025-306, UBUNTU-CVE-2023-26965.