Dovecot — Cyber Threats, Attacks & Incidents

Related Threat Clusters

• Dovecot Vulnerabilities Lead to Denial of Service Risks in Ubuntu and Debian

  Recent updates to Dovecot have revealed multiple vulnerabilities affecting Ubuntu and Debian systems. Specifically, CVE-2025-59031 and CVE-2025-59032 expose systems to denial of service attacks through mishandling of…

  2 articles · Updated May 1, 2026
• Moderate DoS and Info Disclosure Vulnerabilities in Dovecot Affect Fedora 43 and 44

  Fedora versions 43 and 44 of Dovecot have been found to contain multiple vulnerabilities, including CVE-2026-33603, CVE-2026-40020, and CVE-2026-42006. These vulnerabilities allow for information disclosure and…

  3 articles · Updated June 2, 2026

Recent Intelligence Reports

• Fedora 43 Dovecot Suffering from Moderate DoS Info Disclosure Issues — Linuxsecurity · June 2, 2026
• Fedora 44 Dovecot Moderate Info Disclosure DoS Vuln 2026 — Linuxsecurity · June 2, 2026
• Debian Dovecot DLA-4556-1 CVE-2025 — Linuxsecurity · May 1, 2026

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