CVE-2026-45612 rz-libdemangle: Out of bound read in rust demangler
An out-of-bounds read in the Rust demangler allows attackers to cause crashes or leak memory when processing malformed symbols.
- 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
- None listed
What is CVE-2026-45612?
CVE-2026-45612 is a medium-severity memory corruption vulnerability in rizinorg rz-libdemangle, published on 16 Jul 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
rz-libdemangle is a Rizin library for demangling symbols. Prior to 6bf56d3, the Rust demangler in src/rust/rust_v0.c can perform an out-of-bounds read when the demangler structure is not yet initialized. This issue is fixed in commit 6bf56d3.
Weakness: CWE-125
Which versions are affected by CVE-2026-45612?
How do I fix CVE-2026-45612?
No fix has been published for CVE-2026-45612 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-45612 being exploited?
There is no known exploitation of CVE-2026-45612 in the wild and no public exploit code.
Sources
Also known as GHSA-4p92-mfjf-qvrc.