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CVE-2026-40209

🗓️ 25 Jun 2026 12:23:05Reported by OXType 
cve
 cve
🔗 web.nvd.nist.gov👁 13 Views

Incremental zone transfers may hang backend connections until timeout, risking resource exhaustion.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
freebsd
DNSdist -- vulnerabilities
25 Jun 202600:00
freebsd
attackerkb
CVE-2026-40209
25 Jun 202612:23
attackerkb
alpinelinux
CVE-2026-40209
25 Jun 202612:23
alpinelinux
circl
CVE-2026-40209
25 Jun 202613:56
circl
cvelist
CVE-2026-40209 Denial of service via IXFR queries
25 Jun 202612:23
cvelist
debian
[SECURITY] [DSA 6367-1] dnsdist security update
25 Jun 202619:21
debian
debiancve
CVE-2026-40209
25 Jun 202612:23
debiancve
nessus
Debian dsa-6367 : dnsdist - security update
26 Jun 202600:00
nessus
nessus
FreeBSD : DNSdist -- vulnerabilities (6c0e17cf-73a0-11f1-910d-3c7c3fba4204)
29 Jun 202600:00
nessus
nessus
Linux Distros Unpatched Vulnerability : CVE-2026-40209
28 Jun 202600:00
nessus
Rows per page
[
  {
    "vendor": "PowerDNS",
    "product": "DNSdist",
    "collectionURL": "https://repo.powerdns.com/",
    "packageName": "dnsdist",
    "repo": "https://github.com/PowerDNS/pdns",
    "modules": [
      "DNS over TCP to the backend"
    ],
    "programFiles": [
      "dnsdist-tcp-downstream.cc"
    ],
    "versions": [
      {
        "status": "affected",
        "version": "1.9.0",
        "lessThan": "1.9.15",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.0.0",
        "lessThan": "2.0.7",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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25 Jun 2026 15:59Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.3
EPSS0.00404
SSVC
13