Vendor
Dovecot vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 11 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. 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
Dovecot is the organization behind the open-source Dovecot secure IMAP server.
Dovecot technologies
- Dovecot11
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-2026-27858: 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-2026-24031: Dovecot SQL authentication bypass via cleared auth_username_charshighCVSS 7.7EPSS 0.3%
- CVE-2025-59032: Open-Xchange Dovecot denial of service in ManageSieve AUTHENTICATEhighCVSS 7.5EPSS 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-2026-33603: Open-Xchange Dovecot SCRAM TLS channel binding spoofingmediumCVSS 6.8EPSS 0.0%
- CVE-2026-40016: Open-Xchange Dovecot CPU limit bypass in Sieve scriptsmediumCVSS 5.3EPSS 0.0%
- CVE-2026-27857: Open-Xchange Dovecot denial of service via NOOP command memory exhaustionmediumCVSS 4.3EPSS 0.4%
- CVE-2026-42006: Open-Xchange Dovecot uncontrolled memory consumption in IMAPmediumCVSS 4.3EPSS 0.0%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 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 |
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, 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, 26 September 2026.