CVE-2026-47143
Full vulnerability record from the local CVENow database.
Description
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.
Severity
MEDIUM
CVSS score
5.9
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-07-21 21:16:50.270000
Last modified
2026-10-24 19:10:00.127000
View original CVE JSON
{
"id": "CVE-2026-47143",
"sourceIdentifier": "[email protected]",
"published": "2026-07-21T21:16:50.270",
"lastModified": "2026-10-24T19:10:00.127",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Capstone es un framework de desensamblaje. Las versiones anteriores a 6.0.0-Alpha8 y 5.0.8 tienen una desreferencia de puntero NULL en ’modRMRequired()’ y ’decode()’ al desensamblar opcodes 3DNow! (’0F 0F’) en compilaciones compiladas con ’-DCAPSTONE_X86_REDUCE’, permitiendo a un atacante remoto bloquear cualquier aplicación que utilice la biblioteca X86 Capstone reducida al proporcionar una entrada manipulada que contenga la secuencia de 4 bytes ’0F 0F [modrm] [imm8]’. Las versiones 6.0.0-Alpha8 y 5.0.8 parchean el problema."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "capstone-engine",
"product": "capstone",
"versions": [
{
"version": "< 5.0.8",
"status": "affected"
},
{
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"metrics": {
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"cvssData": {
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"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
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"type": "Primary",
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"id": "CVE-2026-47143",
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{
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"role": "CISA Coordinator",
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"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-476"
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"configurations": [
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{
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"source": "[email protected]",
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{
"url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrm",
"source": "[email protected]",
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