CVE-2026-47143

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Source
https://cve.org/CVERecord?id=CVE-2026-47143
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47143.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-47143
Aliases
Downstream
Published
2026-07-21T20:10:44.476Z
Modified
2026-08-12T16:25:20.957810Z
Severity
  • 5.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Capstone has a NULL Pointer Dereference with 3DNow! opcodes
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47143.json",
    "cwe_ids": [
        "CWE-476"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/capstone-engine/capstone

Affected ranges

Type
GIT
Repo
https://github.com/capstone-engine/capstone
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
13f1decbc9181770e9211edb188c14f0699a41b6
Introduced
97db712c91e964718f9cc300e81b9cf76b31a22e
Fixed
a0201371719b5aaa91d318ab2898843718f92d1f
Fixed
fab595205fee206f5c21be6ed8ad2eaf9225f1c7
Database specific
Show details 
{
    "cpe": [
        "cpe:2.3:a:capstone-engine:capstone:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha1:*:*:*:*:*:*",
        "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha2:*:*:*:*:*:*",
        "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha3:*:*:*:*:*:*",
        "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha4:*:*:*:*:*:*",
        "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha5:*:*:*:*:*:*",
        "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha6:*:*:*:*:*:*",
        "cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha7:*:*:*:*:*:*"
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.0.8"
        },
        {
            "introduced": "6.0.0-alpha1"
        },
        {
            "last_affected": "6.0.0-alpha1"
        },
        {
            "introduced": "6.0.0-alpha2"
        },
        {
            "last_affected": "6.0.0-alpha2"
        },
        {
            "introduced": "6.0.0-alpha3"
        },
        {
            "last_affected": "6.0.0-alpha3"
        },
        {
            "introduced": "6.0.0-alpha4"
        },
        {
            "last_affected": "6.0.0-alpha4"
        },
        {
            "introduced": "6.0.0-alpha5"
        },
        {
            "last_affected": "6.0.0-alpha5"
        },
        {
            "introduced": "6.0.0-alpha6"
        },
        {
            "last_affected": "6.0.0-alpha6"
        },
        {
            "introduced": "6.0.0-alpha7"
        },
        {
            "last_affected": "6.0.0-alpha7"
        }
    ]
}

Affected versions

1.*
1.0
2.*
2.0
2.0-rc1
2.1
3.*
3.0-rc1
3.0-rc2
3.0-rc3
4.*
4.0-alpha1
4.0-alpha2
4.0-alpha3
4.0-alpha4
4.0-alpha5
5.*
5.0-rc1
5.0-rc2
5.0-rc3
5.0-rc4
5.0.1
5.0.2
5.0.3
5.0.4
5.0.5
5.0.6
5.0.7
6.*
6.0.0-Alpha3
6.0.0-Alpha4
6.0.0-Alpha5
6.0.0-Alpha6
6.0.0-Alpha7
6.0.0-alpha1
6.0.0-alpha2
6.0.0-alpha3
6.0.0-alpha4
6.0.0-alpha5
6.0.0-alpha6
6.0.0-alpha7

Database specific

vanir_signatures 
[
    {
        "id": "CVE-2026-47143-2f03ffb0",
        "target": {
            "function": "modRMRequired",
            "file": "arch/X86/X86DisassemblerDecoder.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "187000980055492675362382952457146936096",
            "length": 1023.0
        },
        "signature_version": "v1",
        "source": "https://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7",
        "signature_type": "Function"
    },
    {
        "id": "CVE-2026-47143-42778c9b",
        "target": {
            "file": "arch/X86/X86DisassemblerDecoder.c"
        },
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "94778517957781665053515591810238867091",
                "315640415055638152841338594717765071733",
                "190017271567173188141405328334183865340",
                "264977558652581940474257248613091536775",
                "158958293578589584497662362955995436712",
                "315640415055638152841338594717765071733",
                "242328571852912725477216165199820775953",
                "189797111289931334381665302004980672373"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1f",
        "signature_type": "Line"
    },
    {
        "id": "CVE-2026-47143-4ff71b69",
        "target": {
            "function": "decode",
            "file": "arch/X86/X86DisassemblerDecoder.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "217744392535184036845109868347300417273",
            "length": 2583.0
        },
        "signature_version": "v1",
        "source": "https://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1f",
        "signature_type": "Function"
    },
    {
        "id": "CVE-2026-47143-adcd83e2",
        "target": {
            "function": "decode",
            "file": "arch/X86/X86DisassemblerDecoder.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "217744392535184036845109868347300417273",
            "length": 2583.0
        },
        "signature_version": "v1",
        "source": "https://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7",
        "signature_type": "Function"
    },
    {
        "id": "CVE-2026-47143-cd9cfb6b",
        "target": {
            "function": "modRMRequired",
            "file": "arch/X86/X86DisassemblerDecoder.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "187000980055492675362382952457146936096",
            "length": 1023.0
        },
        "signature_version": "v1",
        "source": "https://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1f",
        "signature_type": "Function"
    },
    {
        "id": "CVE-2026-47143-f97f444d",
        "target": {
            "file": "arch/X86/X86DisassemblerDecoder.c"
        },
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "276019457597561395120053698568353517563",
                "299671640254857970179169801570903469472",
                "47599592861809676067690421698111295416",
                "279017597373175798263490084134430306997",
                "43262349231205340952910347115529973599",
                "81934444572908988959814022173545426255",
                "14555207915684185867484329623291848601",
                "104607537312763127902802323158010570087"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7",
        "signature_type": "Line"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47143.json"
vanir_signatures_modified 
"2026-08-12T16:25:20Z"