[UPDATE] [medium] Dovecot: Multiple vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities allow an attacker to perform SQL injection, bypass authentication, disclose information, or cause a Denial of Service.

Who is affected

Deployments of Dovecot are affected by these vulnerabilities.

Urgency

Remediation is urgent due to the variety of attack vectors and potential impact on confidentiality and availability.

Action

Update to the latest version of Dovecot.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

medium

Published

2026-07-17

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0891

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2025-301890.54% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all scored CVEs.
• Low exploitation riskCVE-2025-590280.45% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all scored CVEs.
• Low exploitation riskCVE-2025-590320.70% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 50% of all scored CVEs.
• Low exploitation riskCVE-2026-240310.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all scored CVEs.
• Low exploitation riskCVE-2026-278560.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all scored CVEs.
• Low exploitation riskCVE-2026-278580.79% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all scored CVEs.
• Low exploitation riskCVE-2026-278590.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all scored CVEs.
• Low exploitation riskCVE-2026-278600.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
• Low exploitation riskCVE-2026-03940.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.
• Low exploitation riskCVE-2026-278550.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all scored CVEs.

Referenced CVEs

Recent advisories for Dovecot

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• medium[UPDATE] [medium] OX Dovecot Pro: Multiple Vulnerabilitiescert-bund · 2026-07-29

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