Technology · Open-Xchange
Open-Xchange Dovecot CE vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 8 vulnerabilities in Open-Xchange Dovecot CE: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-42006, was published on 12 May 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About Open-Xchange Dovecot CE
Dovecot Community Edition is an open-source IMAP and POP3 server for Linux and UNIX-like systems, written with security as a primary goal.
Latest Open-Xchange Dovecot CE vulnerabilities
- 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-2025-59032: Open-Xchange Dovecot denial of service in ManageSieve AUTHENTICATEhighCVSS 7.5EPSS 0.4%
Most severe Open-Xchange Dovecot CE vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- 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-2026-27851: 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%
- CVE-2026-40020: Open-Xchange Dovecot improper access control in IMAP SETACLlowCVSS 3.1EPSS 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 | 0 | 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/technologies/dovecot-ce.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, "Open-Xchange Dovecot CE vulnerabilities", https://junglewise.ai/threats/technologies/dovecot-ce, 26 September 2026.