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CVE-2026-56416

🗓️ 22 Jul 2026 13:10:24Reported by NLnet LabsType 
cve
 cve
🔗 web.nvd.nist.gov👁 8 Views

Unbound 1.25.1 may heap overflow during RDATA canonicalization when a second domain name is missing.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-56416
22 Jul 202613:10
attackerkb
Circl
CVE-2026-56416
22 Jul 202613:51
circl
Cvelist
CVE-2026-56416 Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name
22 Jul 202613:10
cvelist
Debian CVE
CVE-2026-56416
22 Jul 202613:10
debiancve
EUVD
EUVD-2026-47684
22 Jul 202613:10
euvd
NVD
CVE-2026-56416
22 Jul 202614:17
nvd
OSV
DEBIAN-CVE-2026-56416
22 Jul 202617:48
osv
Positive Technologies
PT-2026-63392
22 Jul 202600:00
ptsecurity
Vulnrichment
CVE-2026-56416 Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name
22 Jul 202613:10
vulnrichment
[
  {
    "vendor": "NLnet Labs",
    "product": "Unbound",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "lessThan": "1.25.2",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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22 Jul 2026 20:33Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.14.8
SSVC
8