Remote process crash via thread-list double-free
Published May 15, 2026 · Updated May 15, 2026
Use-after-free in radare2 6.1.5 allows remote attackers to crash the process through crafted GDB thread-list responses. The gdbr_threads_list() error path frees the last RDebugPid after appending it to the list, then iterates the list and frees the same object again. Exploitation requires a radare2 GDB client to connect to an attacker-controlled remote server; the public proof of concept demonstrates memory corruption and a process crash, not code execution.
Summary
What happened
Use-after-free in radare2 6.1.5 allows remote attackers to crash the process through crafted GDB thread-list responses. The gdbr_threads_list() error path frees the last RDebugPid after appending it to the list, then iterates the list and frees the same object again. Exploitation requires a radare2 GDB client to connect to an attacker-controlled remote server; the public proof of concept demonstrates memory corruption and a process crash, not code execution.
The record
- CVE
- CVE-2026-8695
- Published
- May 15, 2026
- Updated
- May 15, 2026
- Vendor
- radareorg
- Product
- radare2
- Classifications
- CWE-416, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 15, 2026CVE publishedPublication date reported by the CVE source.
- May 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.1.5
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- uaf.py malicious GDB server proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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