CVE-2026-27858

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

April 28, 2026

Last Seen

August 12, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Oracle Dovecot Security Fixes Address Multiple Vulnerabilities57.9

Oracle has released important security updates for Dovecot in Oracle Linux 7, addressing multiple vulnerabilities. The updates fix CVE-2020-12100, CVE-2020-12673, CVE-2020-12674, and several CVEs from 2026, including CVE-2025-59032, CVE-2026-27856, CVE-2026-27857, CVE-2026-27858, and CVE-2026-42006....

Dovecot Vulnerabilities Lead to Denial of Service Risks in Ubuntu and Debian57.8

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 zip files and AUTHENTICATE commands, respectively. Ubuntu 22.04 LTS and 24.04 LTS w...