EUVD-2026-41796
GHSA-2hgc-c8xq-92w3
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local-only access with low privileges required; impact is limited to crashing the radare2 process with no confidentiality or integrity effect.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
3DescriptionCVE.org
A security flaw has been discovered in radareorg radare2 up to 6.1.6. This impacts the function r_str_word_get0set of the file libr/util/str.c. The manipulation results in integer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The patch is identified as 11ac224c0eb8d57830fccc99e1c1cd8e5d958813. It is best practice to apply a patch to resolve this issue.
AnalysisAI
Integer overflow in radare2's r_str_word_get0set function (libr/util/str.c) allows a local low-privileged attacker to crash the application on versions up to 6.1.6. The CWE-190 integer wraparound can produce a buffer overflow condition, degrading availability of the radare2 analysis session. A public proof-of-concept exists (GitHub issue #26047), though the vulnerability is not listed in CISA KEV and the CVSS 4.0 score of 1.9 reflects genuinely minimal real-world risk given its local-only, low-impact nature.
Technical ContextAI
radare2 is an open-source, command-line reverse engineering framework used extensively by security researchers and CTF participants for binary analysis, disassembly, and debugging. The vulnerable function r_str_word_get0set in libr/util/str.c handles string word-boundary manipulation. CWE-190 (Integer Overflow or Wraparound) describes a root cause where arithmetic produces a result exceeding the storage type's maximum, causing the value to wrap; in string-processing contexts this commonly leads to undersized buffer allocations and subsequent out-of-bounds writes - consistent with the 'Buffer Overflow' tag accompanying this CVE. The CPE string cpe:2.3:a:radareorg:radare2:*:*:*:*:*:*:*:* with an upper bound of 6.1.6 confirms all prior releases of the radareorg-maintained package are affected regardless of platform or architecture.
RemediationAI
Apply upstream fix commit 11ac224c0eb8d57830fccc99e1c1cd8e5d958813 from the radare2 GitHub repository (https://github.com/radareorg/radare2/commit/11ac224c0eb8d57830fccc99e1c1cd8e5d958813). A specific tagged release version incorporating this patch has not been independently confirmed - monitor the releases page at https://github.com/radareorg/radare2/ for a patched build. Users building from source can apply the commit directly. As a compensating control, restrict local user access to the radare2 binary via filesystem permissions or sudo policies to limit who can invoke the tool; this trades off against legitimate analyst workflows that depend on broad access. Given the low severity and local-only attack vector, deferring this fix to the next planned radare2 upgrade cycle is a defensible decision for most deployments.
An out-of-bounds read in radare2 v.5.8.9 and before exists in the print_insn32 function of libr/arch/p/nds32/nds32-dis.h
An out-of-bounds read in radare2 v.5.8.9 and before exists in the print_insn32_fpu function of libr/arch/p/nds32/nds32-d
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0. Rated critical severity (CVSS 9.8), th
OS command injection in radare2-mcp (the Model Context Protocol server that bridges the radare2 reverse-engineering fram
Out-of-bounds Read in GitHub repository radareorg/radare2 prior to 5.7.0. Rated critical severity (CVSS 9.1), this vulne
Out-of-bounds Read in r_bin_ne_get_entrypoints function in GitHub repository radareorg/radare2 prior to 5.6.8. Rated cri
Out-of-bounds read in `r_bin_ne_get_relocs` function in GitHub repository radareorg/radare2 prior to 5.6.8. Rated critic
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0. Rated high severity (CVSS 8.8), this v
Command injection in radare2's PDB parser (versions <6.1.4) enables arbitrary command execution when analysts process ma
In radare 2.0.1, a memory corruption vulnerability exists in store_versioninfo_gnu_verdef() and store_versioninfo_gnu_ve
In radare2 2.0.1, an integer exception (negative number leading to an invalid memory access) exists in store_versioninfo
In radare2 2.0.1, an integer exception (negative number leading to an invalid memory access) exists in store_versioninfo
Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Integer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today