CVE-2026-81884
radare2: Heap out-of-bounds read in radare2 Mach-O LC_DATA_IN_CODE parser
Description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O LC_DATA_IN_CODE parser was vulnerable because the Mach-O LC_DATA_IN_CODE parser trusted dataoff and datasize and allowed a final partial record to be processed. The vulnerability is triggered by opening a crafted Mach-O file while the non-default bin.verbose option is enabled. When datasize was not a multiple of data_in_code_entry, the last iteration read beyond the allocated buffer. This can cause a heap out-of-bounds read and possible process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.
INFO
Published Date :
Sept. 22, 2026, 4:18 p.m.
Last Modified :
Sept. 28, 2026, 1:23 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] |
Solution
- Update radare2 to version 6.2.0.
- Ensure bin.verbose is disabled if not necessary.
- Avoid processing untrusted Mach-O files.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-81884.
| URL | Resource |
|---|---|
| https://github.com/radareorg/radare2/commit/a73de09fea7516f65c14917d66113316ec7e7d6e | Patch |
| https://github.com/radareorg/radare2/issues/26226 | Exploit Issue Tracking Mitigation Vendor Advisory |
| https://github.com/radareorg/radare2/pull/26193 | Patch |
| https://github.com/radareorg/radare2/releases/tag/6.2.0 | Release Notes |
| https://github.com/radareorg/radare2/security/advisories/GHSA-c2g2-2mc7-3x5w | Patch Vendor Advisory |
| https://github.com/radareorg/radare2/issues/26226 | Exploit Issue Tracking Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-81884 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-81884
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-81884 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-81884 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Added CPE Configuration OR *cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:* versions up to (excluding) 6.2.0 Added Reference Type GitHub, Inc.: https://github.com/radareorg/radare2/commit/a73de09fea7516f65c14917d66113316ec7e7d6e Types: Patch Added Reference Type GitHub, Inc.: https://github.com/radareorg/radare2/issues/26226 Types: Exploit, Issue Tracking, Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/radareorg/radare2/pull/26193 Types: Patch Added Reference Type CISA-ADP: https://github.com/radareorg/radare2/issues/26226 Types: Exploit, Issue Tracking, Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/radareorg/radare2/releases/tag/6.2.0 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/radareorg/radare2/security/advisories/GHSA-c2g2-2mc7-3x5w Types: Patch, Vendor Advisory -
New CVE Received by [email protected]
Sep. 22, 2026
Action Type Old Value New Value Added Description radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O LC_DATA_IN_CODE parser was vulnerable because the Mach-O LC_DATA_IN_CODE parser trusted dataoff and datasize and allowed a final partial record to be processed. The vulnerability is triggered by opening a crafted Mach-O file while the non-default bin.verbose option is enabled. When datasize was not a multiple of data_in_code_entry, the last iteration read beyond the allocated buffer. This can cause a heap out-of-bounds read and possible process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0. Added CVSS V3.1 AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L Added CWE CWE-125 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/81xxx/CVE-2026-81884.json">CVE-2026-81884</a> Added Reference https://github.com/radareorg/radare2/commit/a73de09fea7516f65c14917d66113316ec7e7d6e Added Reference https://github.com/radareorg/radare2/issues/26226 Added Reference https://github.com/radareorg/radare2/pull/26193 Added Reference https://github.com/radareorg/radare2/releases/tag/6.2.0 Added Reference https://github.com/radareorg/radare2/security/advisories/GHSA-c2g2-2mc7-3x5w -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 22, 2026
Action Type Old Value New Value Added Reference https://github.com/radareorg/radare2/issues/26226 Added SSVC {'id': 'CVE-2026-81884', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-22T15:39:49.530685Z'}