CVE-2025-43964 Integer overflow in LibRaw
LibRaw fails to validate minimum width values during tag processing, potentially causing a denial of service via crafted raw images.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-43964?
CVE-2025-43964 is a low-severity vulnerability in Libraw Libraw, published on 20 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In LibRaw before 0.21.4, tag 0x412 processing in phase_one_correct in decoders/load_mfbacks.cpp does not enforce minimum w0 and w1 values.
Weakness: CWE-1284
Which versions are affected by CVE-2025-43964?
It affects 1 product.
Products include Libraw Libraw.
How do I fix CVE-2025-43964?
Upgrade to a fixed version.
Is CVE-2025-43964 being exploited?
There is no known exploitation of CVE-2025-43964 in the wild and no public exploit code.
Other vulnerabilities in Libraw Libraw
Sources
Also known as AZL-61756, DEBIAN-CVE-2025-43964, GHSA-3cxc-phxh-65vq, JLSEC-2026-1112, UBUNTU-CVE-2025-43964.