CVE-2026-5402
Full vulnerability record from the local CVENow database.
Description
TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2026-04-30 07:16:37.847000
Last modified
2026-10-26 00:10:00.150000
View original CVE JSON
{
"id": "CVE-2026-5402",
"sourceIdentifier": "[email protected]",
"published": "2026-04-30T07:16:37.847",
"lastModified": "2026-10-26T00:10:00.150",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution"
},
{
"lang": "es",
"value": "Desbordamiento de montículo en el disector del protocolo TLS en Wireshark 4.6.0 a 4.6.4 permite denegación de servicio y posible ejecución de código."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Wireshark Foundation",
"product": "Wireshark",
"defaultStatus": "unaffected",
"versions": [
{
"version": "4.6.0",
"lessThan": "4.6.5",
"versionType": "semver",
"status": "affected"
}
]
}
]
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"affectedData": [
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 10",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "wireshark",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 6",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "wireshark",
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "wireshark",
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "wireshark",
"cpes": [
"cpe:/o:redhat:enterprise_linux:8"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "wireshark",
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
},
{
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"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-05-01T03:55:49.825913Z",
"id": "CVE-2026-5402",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
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},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-122"
}
]
},
{
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],
"configurations": [
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"nodes": [
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"negate": false,
"cpeMatch": [
{
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"criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.6.0",
"versionEndIncluding": "4.6.4",
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],
"references": [
{
"url": "https://gitlab.com/wireshark/wireshark/-/issues/21090",
"source": "[email protected]",
"tags": [
"Exploit",
"Issue Tracking"
]
},
{
"url": "https://www.wireshark.org/security/wnpa-sec-2026-14.html",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-5402",
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
},
{
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"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
},
{
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5402.json",
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
]
}