Vendor
Dovecot vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 16 vulnerabilities in Dovecot: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-33605, was published on 28 August 2026. Nothing was published in the last eight weeks. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About Dovecot
IMAP and POP3 email server implementation providing secure mail access functionality.
Dovecot technologies
- Dovecot16
Latest Dovecot vulnerabilities
- CVE-2026-33605: Dovecot ManageSieve denial of service via malformed pre-auth commandhighCVSS 7.5EPSS 0.5%
- CVE-2026-42006: Open-Xchange Dovecot uncontrolled memory consumption in IMAPmediumCVSS 4.3EPSS 0.0%
- CVE-2026-40020: Open-Xchange Dovecot improper access control in IMAP SETACLlowCVSS 3.1EPSS 0.0%
- CVE-2026-40016: Open-Xchange Dovecot CPU limit bypass in Sieve scriptsmediumCVSS 5.3EPSS 0.0%
- CVE-2026-33603: Open-Xchange Dovecot SCRAM TLS channel binding spoofingmediumCVSS 6.8EPSS 0.0%
- CVE-2026-27851: Open-Xchange Dovecot injection via unsafe variable expansionhighCVSS 7.4EPSS 0.0%
- CVE-2026-27860: If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This…lowCVSS 3.7EPSS 0.3%
- CVE-2026-27859: A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably…mediumCVSS 5.3EPSS 0.4%
- CVE-2026-27858: Open-Xchange Dovecot denial of service in ManageSievehighCVSS 7.5EPSS 0.5%
- CVE-2026-27857: Open-Xchange Dovecot denial of service via NOOP command memory exhaustionmediumCVSS 4.3EPSS 0.4%
- CVE-2026-27856: Dovecot Doveadm timing oracle vulnerability in credential verificationhighCVSS 7.4EPSS 0.3%
- CVE-2026-27855: Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and…mediumCVSS 6.8EPSS 0.3%
- CVE-2026-24031: Dovecot SQL authentication bypass via cleared auth_username_charshighCVSS 7.7EPSS 0.3%
- CVE-2026-0394: When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or…mediumCVSS 5.3EPSS 0.4%
- CVE-2025-59032: Open-Xchange Dovecot denial of service in ManageSieve AUTHENTICATEhighCVSS 7.5EPSS 0.4%
- CVE-2025-59028: When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active…mediumCVSS 5.3EPSS 0.4%
Most severe Dovecot vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-24031: Dovecot SQL authentication bypass via cleared auth_username_charshighCVSS 7.7EPSS 0.3%
- CVE-2026-33605: Dovecot ManageSieve denial of service via malformed pre-auth commandhighCVSS 7.5EPSS 0.5%
- CVE-2026-27858: Open-Xchange Dovecot denial of service in ManageSievehighCVSS 7.5EPSS 0.5%
- CVE-2025-59032: Open-Xchange Dovecot denial of service in ManageSieve AUTHENTICATEhighCVSS 7.5EPSS 0.4%
- CVE-2026-27856: Dovecot Doveadm timing oracle vulnerability in credential verificationhighCVSS 7.4EPSS 0.3%
- CVE-2026-27851: Open-Xchange Dovecot injection via unsafe variable expansionhighCVSS 7.4EPSS 0.0%
- CVE-2026-27855: Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and…mediumCVSS 6.8EPSS 0.3%
- CVE-2026-33603: Open-Xchange Dovecot SCRAM TLS channel binding spoofingmediumCVSS 6.8EPSS 0.0%
- CVE-2025-59028: When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active…mediumCVSS 5.3EPSS 0.4%
- CVE-2026-0394: When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or…mediumCVSS 5.3EPSS 0.4%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 1 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Dovecot vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/dovecot)<a href="https://junglewise.ai/threats/vendors/dovecot"><img src="https://junglewise.ai/threats/vendors/dovecot/badge.svg" alt="Dovecot vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/dovecot.json, and this page as text at https://junglewise.ai/threats/vendors/dovecot.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Dovecot vulnerabilities", https://junglewise.ai/threats/vendors/dovecot, 10 November 2026.