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CVE-2026-56444 Degradation of resolution service when 'discard-timeout' and 'serve-expired-client-timeout' are combined in unusual configuration

🗓️ 22 Jul 2026 13:10:34Reported by NLnet LabsType 
cvelist
 cvelist
🔗 www.cve.org👁 61 Views

CVE-2026-56444: Unbound drops aged replies due to serve-expired timeouts, degrading resolution.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-56444
22 Jul 202613:10
attackerkb
alpinelinux
AlpineLinux
CVE-2026-56444
22 Jul 202613:10
alpinelinux
cbl_mariner
CBLMariner
CVE-2026-56444 affecting package unbound for versions less than 1.25.2-1
23 Jul 202620:32
cbl_mariner
circl
Circl
CVE-2026-56444
22 Jul 202614:06
circl
cve
CVE
CVE-2026-56444
22 Jul 202613:10
cve
debian
Debian
[SECURITY] [DSA 6507-1] unbound security update
19 Sep 202615:00
debian
debiancve
Debian CVE
CVE-2026-56444
22 Jul 202613:10
debiancve
nessus
Tenable Nessus
Debian dsa-6507 : libunbound-dev - security update
21 Sep 202600:00
nessus
nessus
Tenable Nessus
Fedora 43 : unbound (2026-3170ee6a1c)
31 Jul 202600:00
nessus
nessus
Tenable Nessus
Fedora 44 : unbound (2026-e495bd59ef)
30 Jul 202600:00
nessus
Rows per page
[
  {
    "vendor": "NLnet Labs",
    "product": "Unbound",
    "versions": [
      {
        "version": "1.20.0",
        "status": "affected",
        "lessThan": "1.25.2",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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