Radare2 up to 6.1.5 gdbr_threads_list use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Radare2 up to 6.1.5. Affected by this vulnerability is the function gdbr_threads_list. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2026-8695. The attack can be initiated remotely. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Radare2 up to 6.1.5. This affects the function gdbr_threads_list. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability. The summary by CVE is:

radare2 6.1.5 contains a use-after-free vulnerability in the gdbr_threads_list() function that allows remote attackers to trigger memory corruption by sending a valid qfThreadInfo response followed by a malformed qsThreadInfo response. Attackers can exploit this vulnerability through GDB remote debugging to cause a denial of service or potentially achieve code execution by manipulating thread list processing.

The weakness was released by Saad Elharaj as 25835. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-8695 since 05/15/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 316383 (Linux Distros Unpatched Vulnerability : CVE-2026-8695), which helps to determine the existence of the flaw in a target environment.

Applying the patch c213ad6894a1eb9086ac8bf5fae35757e9e1683c is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (316383). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 7.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 316383
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-8695

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: c213ad6894a1eb9086ac8bf5fae35757e9e1683c

Timelineinfo

05/15/2026 CVE reserved
05/16/2026 +1 days Advisory disclosed
05/16/2026 +0 days VulDB entry created
05/24/2026 +8 days VulDB entry last update

Sourcesinfo

Advisory: 25835
Researcher: Saad Elharaj
Status: Confirmed

CVE: CVE-2026-8695 (🔒)
GCVE (CVE): GCVE-0-2026-8695
GCVE (VulDB): GCVE-100-364221

Entryinfo

Created: 05/16/2026 06:19
Updated: 05/24/2026 14:56
Changes: 05/16/2026 06:19 (79), 05/21/2026 10:11 (11), 05/24/2026 14:56 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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