Vulnerability · Published May 15, 2026 · Assigned by VulnCheck

CVE-2026-8695radare2 6.1.5 Use-After-Free via gdbr_threads_list()

High 7.5

In plain English

A high-severity use-after-free in radare2 from radare2. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.6%top 49.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:25.10	radare2	no fix listed	UBUNTU-CVE-2026-8695
Ubuntu:26.04:LTS	radare2	no fix listed	UBUNTU-CVE-2026-8695
Ubuntu:26.10	radare2	no fix listed	UBUNTU-CVE-2026-8695

Affected products (as reported)

Vendor	Product	Versions
radare2	radare2	6.1.5

Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/radareorg/radare2/issues/25835 issue-tracking
https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c patch
https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-threads-list third-party-advisory
https://github.com/radareorg/radare2/issues/25836 issue-tracking