Use After Free in Radare Radare2
CVE-2026-8696
radare2 6.1.5 contains a use-after-free vulnerability in the gdbr_pids_list() function within the GDB client core that allows remote attackers to cause a denial of service or potentially execute arbitrary code by sending malformed thread information responses. Attackers can trigger the vulnerability by causing qsThreadInfo to fail after qfThreadInfo successfully allocates RDebugPid structures, resulting in double-free memory corruption when the error path attempts to clean up the list.
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: 0.010 (62.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.2% 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: 0.010 · change: +0.004
Affected products
- Radare Radare2
- Radare2 — versions 6.1.5, c213ad6894a1eb9086ac8bf5fae35757e9e1683c
Weakness classification (CWE)
References
- github.com/radareorg/radare2/issues/25836 (issue-tracking, Exploit, Issue Tracking)
- github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c (Patch, patch)
- www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-pids-list (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-8696?
- CVE-2026-8696 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-2026-8696?
- High severity. CVSS v3 base score is 7.5 out of 10.