{
  "cveId": "CVE-2025-59028",
  "url": "https://patchblox.com/security/cve/CVE-2025-59028",
  "summary": "CVE-2025-59028 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2025-59028, released March 27, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "dovecot: When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authent...",
  "description": "When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.",
  "published": "2026-03-26T17:00:00Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00464,
  "epssPercentile": 0.40464,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-6\u002Bdeb13u4",
      "fix": "DEBIAN-CVE-2025-59028",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-59028",
      "released": "2026-03-27T09:16:18Z"
    },
    {
      "platform": "linux",
      "product": "dovecot",
      "release": "Debian 14",
      "fixedVersion": "1:2.4.3\u002Bdfsg1-1",
      "fix": "DEBIAN-CVE-2025-59028",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-59028",
      "released": "2026-03-27T09:16:18Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-auth-lua",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-auth-lua 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-auth-lua-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-core",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-core 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-core-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-flatcurve",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-flatcurve 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-flatcurve-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-gssapi",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-gssapi 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-gssapi-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-imapd",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-imapd 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-imapd-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-ldap",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-ldap 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-ldap-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-lmtpd",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-lmtpd 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-lmtpd-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-managesieved",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-managesieved 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-managesieved-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-mysql",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-mysql 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-mysql-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pgsql",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-pgsql 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-pgsql-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-pop3d",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-pop3d 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-pop3d-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-sieve",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-sieve 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-sieve-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-solr",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-solr 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-solr-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-sqlite",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-sqlite 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-sqlite-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot-submissiond",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "fix": "dovecot-submissiond 1:2.4.1\u002Bdfsg1-5ubuntu4.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-dovecot-submissiond-1-2.4.1-dfsg1-5ubuntu4.1",
      "released": "2026-04-15T18:59:31Z"
    },
    {
      "platform": "linux",
      "product": "dovecot23",
      "release": "sles 15.6",
      "fixedVersion": "2.3.21.1-150200.76.1",
      "fix": "SUSE-SU-2026:4139-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4139-1",
      "released": "2026-09-14T07:22:32Z"
    },
    {
      "platform": "linux",
      "product": "dovecot23",
      "release": "sles 15.7",
      "fixedVersion": "2.3.21.1-150200.76.1",
      "fix": "SUSE-SU-2026:4139-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4139-1",
      "released": "2026-09-14T07:22:32Z"
    },
    {
      "platform": "linux",
      "product": "dovecot24",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.4.3-160000.1.1",
      "fix": "OPENSUSE-SU-2026:20554-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20554-1",
      "released": "2026-04-16T13:10:27Z"
    },
    {
      "platform": "linux",
      "product": "dovecot24",
      "release": "sles 16.0",
      "fixedVersion": "2.4.3-160000.1.1",
      "fix": "SUSE-SU-2026:21208-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-21208-1",
      "released": "2026-04-16T13:15:05Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}