CVE-2026-22780 Rizin has a heap overflow on mach0_chained_fixups.c
Attackers can trigger a heap overflow in Rizin by providing a malicious Mach-O file, potentially leading to code execution or crashes.
- 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-2026-22780?
CVE-2026-22780 is a medium-severity memory corruption vulnerability in rizinorg rizin, published on 2 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
Rizin is a UNIX-like reverse engineering framework and command-line toolset. Prior to 0.8.2, a heap overflow can be exploited when a malicious mach0 file, having bogus entries for the dyld chained segments, is parsed by rizin. This vulnerability is fixed in 0.8.2.
Weakness: CWE-770
Which versions are affected by CVE-2026-22780?
It affects 1 product.
Linux distribution packages (1)
rizin openSUSE:Tumbleweed | All versions | 0.8.2-1.1 |
Products include Rizin Rizin.
How do I fix CVE-2026-22780?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-22780 being exploited?
There is no known exploitation of CVE-2026-22780 in the wild and no public exploit code.
Other vulnerabilities in rizinorg rizin
- CVE-2024-31668 rizin before v0.6.3 is vulnerable to Improper Neutralization of Special Elements via meta_set function in librz/analysis/meta.
- CVE-2023-40022 Rizin vulnerable to Integer Overflow in C++ demangler logic
- CVE-2021-3674 Memory corruption in rizin
- CVE-2023-27590 Rizin has stack-based buffer overflow when parsing GDB registers profile files
- CVE-2022-36039 Out-of-bounds write when parsing DEX files in Rizin
Sources
Also known as GHSA-f3v7-xhmj-9cjj, openSUSE-SU-2026:10141-1.