Capstone-engine Capstone vulnerabilities

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Published CVEs affecting Capstone-engine Capstone: 3 record(s), with affected versions and fixes.
cpe:2.3:a:capstone-engine:capstone

CVE-2026-47143 Medium · 5.9 CWE-476 Jul 21, 2026

NULL Pointer Dereference in Capstone-engine Capstone

Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in `modRMRequired()` and `decode()` when disassembling 3DNow! opcodes (`0F 0F`) in builds compiled with `-DCAPSTONE_X86_REDUCE`, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence `0F 0F <modrm> <imm8>`. Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.

CVE-2025-68114 Critical · 9.8 CWE-120 Dec 17, 2025

Capstone doesn't check vsnprintf return in SStream_concat, allows stack buffer underflow and overflow

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream’s index negative or past the end, leading to a stack buffer underflow/overflow when the next write occurs. Commit 2c7797182a1618be12017d7d41e0b6581d5d529e fixes the issue.

CVE-2025-67873 High · 7.8 CWE-122 Dec 17, 2025

Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.