CVE-2026-55893 Capstone SH disassembler `set_reg_n` heap buffer overflow via crafted SH2A FPU bytecode

Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c SH floating-point decoders such as opFADD, opFMUL, and opFSUB call setreg and setregn using shinfo.op.opcount without checking the fixed-size operands array. Repeated crafted instructions process...

CVE-2026-55893: Heap-based Buffer Overflow

Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c SH floating-point decoders such as opFADD, opFMUL, and opFSUB call setreg and setregn using shinfo.op.opcount without checking the fixed-size operands array. Repeated crafted instructions process...

Linux Distros Unpatched Vulnerability : CVE-2026-49263

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's WebAssembly backend accepts attacker-controlled raw WASM instruction bytes throug...

Numeric Truncation Error

Overview Affected versions of this package are vulnerable to Numeric Truncation Error in readbrtable in arch/WASM/WASMDisassembler.c. An attacker can cause no-progress disassembly or parser desynchronization by supplying a large, well-formed brtable instruction through csdisasm or csdisasmiter. T...

UBUNTU-CVE-2026-49263

Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's WebAssembly backend accepts attacker-controlled raw WASM instruction bytes through the public csdisasm and csdisasmiter APIs. For a large but well-formed brtable instruction, the WASM decoder accumulates the immediate...

CVE-2026-49263

Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's WebAssembly backend accepts attacker-controlled raw WASM instruction bytes through the public csdisasm and csdisasmiter APIs. For a large but well-formed brtable instruction, the WASM decoder accumulates the immediate...

EUVD-2026-58747

Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's WebAssembly backend accepts attacker-controlled raw WASM instruction bytes through the public csdisasm and csdisasmiter APIs. For a large but well-formed brtable instruction, the WASM decoder accumulates the immediate...

CVE-2025-67873: Heap-based 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 csdisasm/csdisasmiter memcpy more than 24 bytes into csinsn.bytes, causing a heap buffer overflow in the disassembly path. Commit...

capstone/fuzz_disasmnext: Index-out-of-bounds in printVectorIndex

Detailed report: https://oss-fuzz.com/testcase?key=5644198205718528 Project: capstone Fuzzer: libFuzzercapstonefuzzdisasmnext Fuzz target binary: fuzzdisasmnext Job Type: libfuzzerubsancapstone Platform Id: linux Crash Type: Index-out-of-bounds Crash Address: Crash State: printVectorIndex...

capstone/fuzz_disasmmaster: Use-of-uninitialized-value in update_pub_insn

Detailed report: https://oss-fuzz.com/testcase?key=5956930588639232 Project: capstone Fuzzer: libFuzzercapstonefuzzdisasmmaster Fuzz target binary: fuzzdisasmmaster Job Type: libfuzzermsancapstone Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: updatepubinsn...