CVE-2026-42255_CVE-2026-42255

7.2 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

Description

Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.

Basic Information

ID CVE-2026-42255

Source mitre

Published Apr 26, 2026 at 02:48

Modified Apr 26, 2026 at 03:10

Affected Product

Vendor Technitium

Product DnsServer

Affected Versions Technitium DnsServer 0

CWE Classification

CWE-684

References

github.com /TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md

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    "lastseen": "",
    "description": "Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.",
    "published": "2026-04-26T02:48:44.810Z",
    "modified": "2026-04-26T03:10:30.349Z",
    "type": "cve",
    "title": "CVE-2026-42255",
    "source": "mitre",
    "references": "https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#technitium-dns-server-change-log",
    "id": "CVE-2026-42255",
    "bulletinFamily": "",
    "cwe": [
        "CWE-684"
    ],
    "cvelist": null,
    "sourceData": "Technitium DnsServer 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "DnsServer",
    "version": "0",
    "vendor": "Technitium",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}