Vulnerability · Published Feb 2, 2026 · Assigned by GitHub_M
CVE-2026-22780Rizin has a heap overflow on mach0_chained_fixups.c
Medium 4.4
In plain English
A medium-severity resource allocation without limits in rizin from rizinorg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 3.1)4.4Medium
Exploit odds (30 days)0.2%top 89.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
References
- https://github.com/rizinorg/rizin/security/advisories/GHSA-f3v7-xhmj-9cjj x_refsource_CONFIRM
- https://github.com/rizinorg/rizin/issues/5768 x_refsource_MISC
- https://github.com/rizinorg/rizin/pull/5770 x_refsource_MISC
- https://github.com/rizinorg/rizin/commit/41ea75d5b07d9b41b27ae80675cdda65f1b1c989 x_refsource_MISC
- https://github.com/rizinorg/rizin/blob/6dd0dba9ff4dc706f549d0cdcd93856b49e59aa0/librz/bin/format/mach0/mach0_chained_fixups.c#L200 x_refsource_MISC
- https://github.com/rizinorg/rizin/releases/tag/v0.8.2 x_refsource_MISC