radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O Swift field-metadata parser was vulnerable because a relative Swift field pointer could be lower than the field-metadata section base, making subtraction produce a negative logical index. The vulnerability is triggered by parsing Swift type and class metadata from a crafted Mach-O file. The derived index was used to read four bytes immediately before the allocated field-metadata buffer. This can cause incorrect metadata processing or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.
History

Fri, 25 Sep 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Radare
Radare radare2
CPEs cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:*
Vendors & Products Radare
Radare radare2

Tue, 22 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 22 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Radareorg
Radareorg radare2
Vendors & Products Radareorg
Radareorg radare2

Tue, 22 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
Description radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O Swift field-metadata parser was vulnerable because a relative Swift field pointer could be lower than the field-metadata section base, making subtraction produce a negative logical index. The vulnerability is triggered by parsing Swift type and class metadata from a crafted Mach-O file. The derived index was used to read four bytes immediately before the allocated field-metadata buffer. This can cause incorrect metadata processing or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.
Title radare2: Heap out-of-bounds read in radare2 Mach-O Swift metadata parser
Weaknesses CWE-125
CWE-191
References
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-09-22T15:05:21.940Z

Updated: 2026-09-22T17:44:38.856Z

Reserved: 2026-08-27T17:48:42.122Z

Link: CVE-2026-81881

cve-icon Vulnrichment

Updated: 2026-09-22T17:33:04.444Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-22T16:18:02.910

Modified: 2026-09-25T16:49:14.450

Link: CVE-2026-81881

cve-icon Redhat

No data.