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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.

PUBLISHED Reserved 2026-05-15 | Published 2026-05-15 | Updated 2026-05-15 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-416 Use After Free

Product status

Default status
affected

6.1.5 (semver)
affected

c213ad6894a1eb9086ac8bf5fae35757e9e1683c (git)
unaffected

Credits

Saad Elharaj finder

References

github.com/radareorg/radare2/issues/25835 exploit

github.com/radareorg/radare2/issues/25835 issue-tracking

github.com/...ommit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c patch

www.vulncheck.com/...e2-use-after-free-via-gdbr-threads-list third-party-advisory

github.com/radareorg/radare2/issues/25836 issue-tracking

cve.org (CVE-2026-8695)

nvd.nist.gov (CVE-2026-8695)

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