CVE-2026-8695
radare2 6.1.5 Use-After-Free via gdbr_threads_list()
Description
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.
INFO
Published Date :
May 15, 2026, 5:16 p.m.
Last Modified :
May 18, 2026, 6:38 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update radare2 to a patched version.
- Avoid sending malformed qsThreadInfo responses.
- Monitor for vendor advisories and security updates.
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-2026-8695.
| URL | Resource |
|---|---|
| https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c | Patch |
| https://github.com/radareorg/radare2/issues/25835 | Exploit Issue Tracking |
| https://github.com/radareorg/radare2/issues/25836 | Exploit Issue Tracking |
| https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-threads-list | Third Party Advisory |
| https://github.com/radareorg/radare2/issues/25835 | Exploit Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8695 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-2026-8695
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-2026-8695 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8695 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]
May. 18, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:* versions up to (including) 6.1.4 Added Reference Type VulnCheck: https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c Types: Patch Added Reference Type CISA-ADP: https://github.com/radareorg/radare2/issues/25835 Types: Exploit, Issue Tracking Added Reference Type VulnCheck: https://github.com/radareorg/radare2/issues/25835 Types: Exploit, Issue Tracking Added Reference Type VulnCheck: https://github.com/radareorg/radare2/issues/25836 Types: Exploit, Issue Tracking Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-threads-list Types: Third Party Advisory -
CVE Modified by [email protected]
May. 15, 2026
Action Type Old Value New Value Added Reference https://github.com/radareorg/radare2/issues/25836 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 15, 2026
Action Type Old Value New Value Added Reference https://github.com/radareorg/radare2/issues/25835 -
New CVE Received by [email protected]
May. 15, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-416 Added Reference https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c Added Reference https://github.com/radareorg/radare2/issues/25835 Added Reference https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-threads-list