CVE-2026-22780

Rizin has a heap overflow on mach0_chained_fixups.c

CVSS 4.4 MEDIUMEPSS 0.2%CWE-770

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.4EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

02 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Affected products

rizinorg · rizin

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References

https://github.com/rizinorg/rizin/blob/6dd0dba9ff4dc706f549d0cdcd93856b49e59aa0/librz/bin/format/mach0/mach0_chained_fixups.c#L200 https://github.com/rizinorg/rizin/commit/41ea75d5b07d9b41b27ae80675cdda65f1b1c989 https://github.com/rizinorg/rizin/issues/5768 https://github.com/rizinorg/rizin/pull/5770 https://github.com/rizinorg/rizin/releases/tag/v0.8.2 https://github.com/rizinorg/rizin/security/advisories/GHSA-f3v7-xhmj-9cjj