Out-of-bounds read in radare2 - CVE-2026-81879
Published: August 15, 2026 / Updated: September 23, 2026
Vulnerability identifier: #VU142714
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-81879
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds read in the ELF parser when parsing a crafted ELF file using the PN_XNUM extended program-header count. A remote attacker can trick the victim into opening a crafted ELF file to cause a denial of service.
User interaction is required to open or inspect a crafted ELF file.
Affected software
radare2
How to mitigate CVE-2026-81879
Install security update from vendor's website.
radare2 - update to 6.2.0