Medium 4.4Published Feb 2, 2026

CVE-2026-22780Rizin has a heap overflow on mach0_chained_fixups.c

Updated under an hour ago (Oct 26, 2026, 11:00 PM ET)

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It affects rizinorg rizin and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for rizinorg rizin

Exploited in the last 30 days

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: 4.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

rizinorg rizin rizinorg:rizin (from the name)	before 0.8.2	CNA record
rizin rizin rizin:rizin	before 0.8.2	NVD

References

References

https://github.com/rizinorg/rizin/security/advisories/GHSA-f3v7-xhmj-9cjj	x-refsource-confirm, patch, vendor-advisory
https://github.com/rizinorg/rizin/issues/5768	x-refsource-misc, issue-tracking
https://github.com/rizinorg/rizin/pull/5770	x-refsource-misc, issue-tracking
https://github.com/rizinorg/rizin/commit/41ea75d5b07d9b41b27ae80675cdda65f1b1c989	x-refsource-misc, patch
https://github.com/rizinorg/rizin/blob/6dd0dba9ff4dc706f549d0cdcd93856b49e59aa0/librz/bin/format/mach0/mach0_chained_fixups.c#L200	x-refsource-misc, patch
https://github.com/rizinorg/rizin/releases/tag/v0.8.2	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.