Radare2 5.9.9 Mach-O File Parser mach0.c walk_exports_trie resource consumption ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Radare2 5.9.9 and classified as problematic. Impacted is the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Performing a manipulation results in resource consumption. This vulnerability is identified as CVE-2026-4174. The attack is only possible with local access. Additionally, an exploit exists. The presence of this vulnerability remains uncertain at this time. The affected component should be upgraded. The code maintainer states that, "[he] wont consider this bug a DoS".

Detailsinfo

A vulnerability classified as problematic has been found in Radare2 5.9.9. This affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-4174. The exploitability is told to be easy. An attack has to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment. The code maintainer states that, "[he] wont consider this bug a DoS". The vulnerability scanner Nessus provides a plugin with the ID 302864 (Linux Distros Unpatched Vulnerability : CVE-2026-4174), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 4371ae84c99c46b48cb21badbbef06b30757aba0 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (302864) and EUVD (EUVD-2026-12222). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Programming Language: 🔒
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 302864
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-4174

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Radare2 6.1.2
Patch: 4371ae84c99c46b48cb21badbbef06b30757aba0

Timelineinfo

03/14/2026 Advisory disclosed
03/14/2026 +0 days VulDB entry created
03/19/2026 +5 days VulDB entry last update

Sourcesinfo

Advisory: 25482
Status: Confirmed
Disputed: 🔍

CVE: CVE-2026-4174 (🔒)
GCVE (CVE): GCVE-0-2026-4174
GCVE (VulDB): GCVE-100-351081
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/14/2026 16:13
Updated: 03/19/2026 03:27
Changes: 03/14/2026 16:13 (65), 03/15/2026 19:09 (1), 03/19/2026 03:27 (2)
Complete: 🔍
Submitter: breakingbad
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #769799: radareorg Radare2 5.9.9 Denial of Service (by breakingbad)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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