Resource exhaustion in Rizinorg Rizin
CVE-2026-22780
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 vulnera…
EPSS: 0.000 (0.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.
Affected products
- Rizinorg Rizin — versions < 0.8.2
Weakness classification (CWE)
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)
Frequently asked questions
- What is CVE-2026-22780?
- CVE-2026-22780 is a medium-severity vulnerability in Rizinorg Rizin, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.4/10. Published 2026-02-02.
- How severe is CVE-2026-22780?
- Medium severity. CVSS v3 base score is 4.4 out of 10.