EUVD-2026-63669Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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 vector because Capstone is a library requiring a calling application to pass attacker-controlled bytecode; no confidentiality or integrity impact demonstrated; user interaction reflects the application's choice to process untrusted input.
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
3DescriptionCVE.org
Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c sh_disassemble() function computes an idx value from a raw 16-bit instruction without ensuring it is within the active mode-specific decode[] function-pointer table. An application using CS_ARCH_SH with CS_MODE_SH2A or CS_MODE_SH4A and CS_MODE_SHFPU can pass crafted bytecode through cs_disasm_iter() or cs_disasm(), causing the decode[idx] test to read outside the table and terminate the process with a segmentation fault. No code execution or information disclosure was demonstrated. This issue is fixed in version 6.0.0-Alpha10.
AnalysisAI
Out-of-bounds read in Capstone's SuperH (SH) architecture disassembler crashes the host process when fed crafted SH2A or SH4A bytecode. Versions 6.0.0-Alpha9 and earlier are affected when the library handle is configured with CS_ARCH_SH plus CS_MODE_SH2A or CS_MODE_SH4A and CS_MODE_SHFPU; the disassembler derives an idx value from a raw 16-bit instruction and dereferences a mode-specific decode[] function-pointer table without a bounds check. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the calling application to have initialised a Capstone handle explicitly with CS_ARCH_SH and either CS_MODE_SH2A or CS_MODE_SH4A combined with CS_MODE_SHFPU - this is not the default Capstone configuration, and the vast majority of Capstone integrations target x86, ARM, or MIPS and are entirely unaffected. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:N/UI:P/VA:H, score 6.8) accurately reflects the constrained impact profile: the local attack vector is correct because Capstone is a library, so exploitation requires a calling application to pass attacker-controlled bytecode to cs_disasm() or cs_disasm_iter(), and user interaction (UI:P) represents the application developer's choice to process untrusted input. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Capstone to version 6.0.0-Alpha10, which is confirmed by the official release tag and contains the bounds check introduced in commits 09e76802380b9e94d9720c44458d9d5282219e7e and e17ee44a8307ea33375b4727ac4f987650bf7bed, merged via pull requests #2968 and #2969 (https://github.com/capstone-engine/capstone/pull/2968 and https://github.com/capstone-engine/capstone/pull/2969). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Integer overflow in the cs_winkernel_malloc function in winkernel_mm.c in Capstone 3.0.4 and earlier allows attackers to
Heap buffer overflow in Capstone's SuperH (SH) architecture floating-point disassembler affects all releases through 6.0
Capstone disassembly framework package in Alpine Linux has been patched at version 5.0.8-r0, addressing an unspecified v
Out-of-bounds read in Capstone's cs_insn_name() public API crashes host processes when the M68K or RISCV architecture ba
Same weakness CWE-125 – Out-of-bounds Read
View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| SUSE Linux Enterprise High Performance Computing 15 SP7 | Affected |
| SUSE Linux Enterprise Micro 5.5 | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | Affected |
| SUSE Linux Enterprise Server 15 SP7 | Affected |
| SUSE Linux Enterprise Server 16.0 | Affected |
| SUSE Linux Enterprise Server 16.1 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Affected |
| SUSE Linux Micro 6.0 | Affected |
| SUSE Linux Micro 6.1 | Affected |
| SUSE Linux Micro 6.2 | Affected |
| openSUSE Leap 16.0 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | Affected |
| SUSE Linux Enterprise Server 15 SP5 | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | Affected |
| SUSE Linux Enterprise Server 15 SP6 | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | Affected |
| openSUSE Leap 15.5 | Affected |
| openSUSE Leap 15.6 | Affected |
| openSUSE Leap Micro 5.5 | Affected |
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External POC / Exploit Code
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