CVE-2026-47143

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{"affected": [{"affectedData": [{"product": "capstone", "vendor": "capstone-engine", "versions": [{"status": "affected", "version": "< 5.0.8"}, {"status": "affected", "version": "< 6.0.0-Alpha8"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:capstone-engine:capstone:*:*:*:*:*:*:*:*", "matchCriteriaId": "69CF4E4A-87DF-4504-BB90-4BB520E74A4D", "versionEndExcluding": "5.0.8", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha1:*:*:*:*:*:*", "matchCriteriaId": "99F76525-F73B-4F66-AE46-A1ECAF0C7A0C", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha2:*:*:*:*:*:*", "matchCriteriaId": "442C7F48-5BEE-4702-AC0F-DE5C70FAA93F", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha3:*:*:*:*:*:*", "matchCriteriaId": "3C88415A-376C-4F7F-9D7D-3CB5C8FB9346", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha4:*:*:*:*:*:*", "matchCriteriaId": "67358CE5-F734-4E55-B021-D3AC5D937DD4", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha5:*:*:*:*:*:*", "matchCriteriaId": "9DED59B8-DC00-4323-89FA-044F7666AF5D", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha6:*:*:*:*:*:*", "matchCriteriaId": "A575223A-D5D5-43DB-BDFD-993F829F7ED2", "vulnerable": true}, {"criteria": "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha7:*:*:*:*:*:*", "matchCriteriaId": "7A82E2CC-0E0D-44F4-901D-CF7FBFAFA8C7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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 \u2019modRMRequired()\u2019 y \u2019decode()\u2019 al desensamblar opcodes 3DNow! (\u20190F 0F\u2019) en compilaciones compiladas con \u2019-DCAPSTONE_X86_REDUCE\u2019, permitiendo a un atacante remoto bloquear cualquier aplicaci\u00f3n que utilice la biblioteca X86 Capstone reducida al proporcionar una entrada manipulada que contenga la secuencia de 4 bytes \u20190F 0F [modrm] [imm8]\u2019. Las versiones 6.0.0-Alpha8 y 5.0.8 parchean el problema."}], "id": "CVE-2026-47143", "lastModified": "2026-10-24T19:10:00.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.4, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-47143", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-22T13:42:44.951327Z", "version": "2.0.3"}}]}, "published": "2026-07-21T21:16:50.270", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1f"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/capstone-engine/capstone/pull/2924"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrm"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "capstone: Capstone: Denial of Service vulnerability via crafted input", "id": "2504488", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504488"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in the Capstone disassembly framework. This vulnerability, a null pointer dereference, can be exploited by a remote attacker. By providing a specially crafted input containing a specific 4-byte sequence during the disassembly of 3DNow! opcodes, the attacker can cause any application using the reduced X86 Capstone library to crash, leading to a denial of service (DoS)."], "name": "CVE-2026-47143", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "capstone", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "capstone", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "capstone", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "ruby3.3", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "ruby3.4", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "ruby4.0", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-07-21T20:10:44Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-47143\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-47143\nhttps://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1f\nhttps://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7\nhttps://github.com/capstone-engine/capstone/pull/2924\nhttps://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrm"], "statement": "A flaw was found in the Capstone disassembly framework. A NULL pointer dereference in modRMRequired() and decode() when disassembling 3DNow! opcodes can crash applications using Capstone. This vulnerability only affects builds compiled with the -DCAPSTONE_X86_REDUCE flag; standard full builds are not vulnerable.", "threat_severity": "Moderate"}

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