CVE-2026-42255

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Source

https://cve.org/CVERecord?id=CVE-2026-42255

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42255.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-42255

Published

2026-04-26T02:48:44.810Z

Modified

2026-07-15T01:49:06.055476438Z

Severity

7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L CVSS Calculator

Summary

[none]

Details

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

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42255.json",
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-684"
    ]
}

References

Affected packages

Git / github.com/technitiumsoftware/dnsserver

Affected ranges

Type

GIT

Repo

https://github.com/technitiumsoftware/dnsserver

Events

Introduced

Fixed

111ac6cf3c640a08eb34324253e2f2e34f35d7a5

Database specific

{
    "cpe": "cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "15.0.0"
        },
        {
            "fixed": "15.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v11.*

v11.5.3

v12.*

v12.0

v12.0.1

v12.1

v12.2

v12.2.1

v13.*

v13.0.2

v13.1

v13.1.1

v13.2

v13.2.1

v13.2.2

v13.3

v13.4

v13.4.1

v13.4.2

v13.4.3

v13.6.0

v14.*

v14.0.0

v14.0.1

v14.1.0

v14.2.0

v14.3.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42255.json"