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CVE-2026-42955 Extra fix for CVE-2026-40622 to also clamp the TTL of A/AAAA records disallowing a one-time 'ghost domain' delegation renewal via glue records

🗓️ 22 Jul 2026 13:05:53Reported by NLnet LabsType 
cvelist
 cvelist
🔗 www.cve.org👁 8 Views

Unbound 1.16.2–1.25.1 ghost domain attack by clamping A/AAAA glue TTL to extend the cached window.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-42955
22 Jul 202613:05
attackerkb
CVE
CVE-2026-42955
22 Jul 202613:05
cve
Debian CVE
CVE-2026-42955
22 Jul 202613:05
debiancve
EUVD
EUVD-2026-47666
22 Jul 202613:05
euvd
NVD
CVE-2026-42955
22 Jul 202614:17
nvd
OSV
DEBIAN-CVE-2026-42955
22 Jul 202617:48
osv
Positive Technologies
PT-2026-63373
22 Jul 202600:00
ptsecurity
Vulnrichment
CVE-2026-42955 Extra fix for CVE-2026-40622 to also clamp the TTL of A/AAAA records disallowing a one-time 'ghost domain' delegation renewal via glue records
22 Jul 202613:05
vulnrichment
[
  {
    "vendor": "NLnet Labs",
    "product": "Unbound",
    "versions": [
      {
        "version": "1.16.2",
        "status": "affected",
        "lessThan": "1.25.2",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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