CVE-2026-8696
CVE-2026-8696 is a high-severity vulnerability in Radare Radare2 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 8.7
- EPSS exploit prediction: 1% (45th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30635
- Weakness: CWE-416
- Affected product: Radare Radare2
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2026-8696?
- CVE-2026-8696 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-8696 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-8696?
- CVE-2026-8696 affects Radare Radare2. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-8696?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-8696 have an EU (EUVD) identifier?
- Yes. CVE-2026-8696 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30635.
- When was CVE-2026-8696 published?
- CVE-2026-8696 was published on 2026-05-15 and last updated on 2026-06-17.
References
- https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c
- https://github.com/radareorg/radare2/issues/25836
- https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-pids-list
Affected products (1)
- cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:*
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