Buffer overflow in Radare Radare2
CVE-2025-5646
A vulnerability has been found in Radare2 5.9.9 and classified as problematic. This vulnerability affects the function r_cons_rainbow_free in the library /libr/cons/pal.c of the component radiff2. The manipulation of the argument -T leads to memory corruption. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The patch is identified as 5705d99cc1f23f36f9a84aab26d1724010b97798. It is recommended to apply a patch to fix this issue. The documentation explains that the parameter -T is experimental and "crashy". Further analysis has shown "the race is not a real problem unless you use asan". A new warning has been added.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (8.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Radare Radare2 — versions 5.9.9
- N/a Radare2 — versions 5.9.9
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
- cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
- cna@vuldb.com (issue-tracking, Issue Tracking, Vendor Advisory)
- cna@vuldb.com (Exploit, exploit)
- cna@vuldb.com (Patch, patch)
Frequently asked questions
- What is CVE-2025-5646?
- CVE-2025-5646 is a low-severity vulnerability in Radare Radare2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 2.5/10. Published 2025-06-05.
- How severe is CVE-2025-5646?
- Low severity. CVSS v3 base score is 2.5 out of 10.