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CVE-2026-33605

🗓️ 28 Aug 2026 10:12:13Reported by OXType 
cve
 cve
🔗 web.nvd.nist.gov👁 39 Views

Unauthenticated DoS in Dovecot ManageSieve via malformed pre-auth command crashing login process.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-33605
28 Aug 202610:12
alpinelinux
cvelist
Cvelist
CVE-2026-33605
28 Aug 202610:12
cvelist
debiancve
Debian CVE
CVE-2026-33605
28 Aug 202610:12
debiancve
euvd
EUVD
EUVD-2026-67660
28 Aug 202610:12
euvd
mageia
Mageia
Updated dovecot package fixes security vulnerabilities
9 Sep 202604:15
mageia
nvd
NVD
CVE-2026-33605
28 Aug 202612:16
nvd
nessus
Tenable Nessus
openSUSE 16: dovecot24 / dovecot24-backend-mysql / dovecot24-backend-pgsql / etc (openSUSE-SU-2026:21720-1)
3 Sep 202600:00
nessus
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-33605
29 Aug 202600:00
nessus
opensuse
OPENSUSE Linux
dovecot24-2.4.5-1.1 on GA media (moderate)
31 Aug 202600:00
opensuse
osv
OSV
ALPINE-CVE-2026-33605
28 Aug 202612:16
osv
Rows per page
[
  {
    "defaultStatus": "unaffected",
    "modules": [
      "core"
    ],
    "product": "OX Dovecot Pro",
    "vendor": "Open-Xchange GmbH",
    "versions": [
      {
        "lessThan": "2.3.22.2",
        "status": "affected",
        "version": "2.3.0",
        "versionType": "semver"
      },
      {
        "lessThan": "3.0.7",
        "status": "affected",
        "version": "3.0.0",
        "versionType": "semver"
      },
      {
        "lessThan": "3.1.6",
        "status": "affected",
        "version": "3.1.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "modules": [
      "core"
    ],
    "product": "OX Dovecot CE",
    "vendor": "Open-Xchange GmbH",
    "versions": [
      {
        "lessThan": "2.4.5",
        "status": "affected",
        "version": "2.3.0",
        "versionType": "semver"
      }
    ]
  }
]

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03 Sep 2026 18:13Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
EPSS0.00375
SSVC
39