CVE-2026-81880
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In radare2 prior to 6.2.0, the Apple Preferred Executable Format (PEF) loader was vulnerable because it accepted relocSecCount values not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file, causing denial of service through excessive CPU consumption and prolonged processing.
Risk Assessment
Opening a crafted PEF file can lead to application hang due to excessive CPU consumption, causing denial of service. The risk mainly affects analysts opening untrusted files.
Recommendation
Update radare2 to version 6.2.0 or later. Avoid opening untrusted Apple PEF files without prior validation.
Other vulnerabilities in radare2
See all- CVE-2026-8696High
Version 6.1.5 of radare2 contains a use-after-free vulnerability in the gdbr_pids_list() function, which can be exploited by remote attackers to cause a denial of service or potentially execute arbitrary code by sending malformed thread information responses.
- CVE-2026-8695High
radare2 version 6.1.5 contains a use-after-free vulnerability in the gdbr_threads_list() function. This allows remote attackers to trigger memory corruption by sending a valid qfThreadInfo response followed by a malformed qsThreadInfo response.
- CVE-2026-40499High
radare2 prior to version 6.1.4 contains a command injection vulnerability in the PDB parser's print_gvars() function that allows attackers to execute arbitrary commands by embedding a newline byte in the PE section header name field. Attackers can craft a malicious PDB file with specially crafted section names to inject r2 commands that are executed when the idp command processes the file.
- CVE-2017-15932High
In radare2 version 2.0.1, an integer exception (negative number leading to an invalid memory access) exists in store_versioninfo_gnu_verdef() in elf.c, which can be triggered by crafted ELF files when parsing the ELF version on 32-bit systems.
- CVE-2017-15931High
In radare2 version 2.0.1, an integer exception (negative number leading to an invalid memory access) exists in store_versioninfo_gnu_verneed() in elf.c, which can be exploited via crafted ELF files on 32-bit systems.
- CVE-2017-15385High
The store_versioninfo_gnu_verdef function in radare2 2.0.0 allows remote attackers to cause a denial of service via a crafted ELF file, leading to an invalid write in r_read_le16 and application crash.
- CVE-2017-15368High
The wasm_dis function in radare2 version 2.0.0 allows remote attackers to cause denial of service through stack-based buffer over-read, leading to application crash. The attack can be executed using a crafted WASM file that triggers an incorrect r_hex_bin2str call.
- CVE-2017-10929High
The grub_memmove function in radare2 1.5.0 allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) via a crafted binary file.
- CVE-2017-9949High
The grub_memmove function in radare2 1.5.0 allows remote attackers to cause a denial of service via a crafted binary file, potentially leading to application crashes due to a buffer underflow.
- CVE-2017-6448High
The dalvik_disassemble function in radare2 version 1.2.1 allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted DEX file.
Original NVD description (English source)
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS