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

What is CVE-2026-8695?

CVE-2026-8695 is a high-severity use after free vulnerability in Radare Radare2, published on 15 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

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.

Weakness: CWE-416

Which versions are affected by CVE-2026-8695?

It affects 1 product.

Products include Radare Radare2.

How do I fix CVE-2026-8695?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-8695 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8695 exists.

Other vulnerabilities in Radare Radare2

• CVE-2025-1864 Buffer Overflow and Potential Code Execution in Radare2 Critical 10.0
• CVE-2025-1744 Out-of-bounds Write in radare2 Critical 10.0
• CVE-2021-32494 Denial of service in radare2 Critical 10.0
• CVE-2021-32495 Use after free in radare2 Critical 10.0
• CVE-2024-29646 Memory corruption in n/a Critical 9.8

All Radare Radare2 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-jrmh-3vm7-w5m4, UBUNTU-CVE-2026-8695, openSUSE-SU-2026:10815-1.