Use After Free in Radare Radare2
CVE-2026-8695
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.011 (63.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.011 · change: +0.004
Affected products
- Radare Radare2
- Radare2 — versions 6.1.5, c213ad6894a1eb9086ac8bf5fae35757e9e1683c
Weakness classification (CWE)
References
- github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c (Patch, patch)
- github.com/radareorg/radare2/issues/25835 (issue-tracking, Exploit, Issue Tracking)
- www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-threads-list (Third Party Advisory, third-party-advisory)
- github.com/radareorg/radare2/issues/25836 (issue-tracking, Exploit, Issue Tracking)
Frequently asked questions
- What is CVE-2026-8695?
- CVE-2026-8695 is a high-severity vulnerability in Radare Radare2, classified under Use After Free. CVSS score: 7.5/10. Published 2026-05-15.
- How severe is CVE-2026-8695?
- High severity. CVSS v3 base score is 7.5 out of 10.