How severe is CVE-2025-59031?

CVE-2025-59031 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-59031 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59031?

CVE-2025-59031 primarily affects Open-xchange Dovecot. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-59031?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-59031 have an EU (EUVD) identifier?

Yes. CVE-2025-59031 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209090.

When was CVE-2025-59031 published?

CVE-2025-59031 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2025-59031

CVE-2025-59031 is a medium-severity vulnerability in Open-xchange Dovecot with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209090
Weakness: CWE-200
Affected product: Open-xchange Dovecot
Published: 2026-03-27
Last modified: 2026-06-17

Description

Dovecot has provided a script to use for attachment to text conversion. This script unsafely handles zip-style attachments. Attacker can use specially crafted OOXML documents to cause unintended files on the system to be indexed and subsequently ending up in FTS indexes. Do not use the provided script, instead, use something else like FTS tika. No publicly available exploits are known.

Frequently asked questions

What is CVE-2025-59031?: Dovecot has provided a script to use for attachment to text conversion. This script unsafely handles zip-style attachments. Attacker can use specially crafted OOXML documents to cause unintended files on the system to be indexed and subsequently ending up in FTS indexes. Do not use the provided script, instead, use something else like FTS tika. No publicly available exploits are known.
How severe is CVE-2025-59031?: CVE-2025-59031 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-59031 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59031?: CVE-2025-59031 primarily affects Open-xchange Dovecot. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-59031?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59031 have an EU (EUVD) identifier?: Yes. CVE-2025-59031 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209090.
When was CVE-2025-59031 published?: CVE-2025-59031 was published on 2026-03-27 and last updated on 2026-06-17.

References

https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json

Affected products (2)

cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*
cpe:2.3:a:open-xchange:dovecot:*:*:*:*:pro:*:*:*

More vulnerabilities in Open-xchange Dovecot

CVE-2026-24031 — High (CVSS 7.7): Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability…
CVE-2026-27858 — High (CVSS 7.5): Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount…
CVE-2025-59032 — High (CVSS 7.5): ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response. This can be used to crash…
CVE-2026-27851 — High (CVSS 7.4): When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly…
CVE-2026-27856 — High (CVSS 7.4): Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can…
CVE-2026-33603 — Medium (CVSS 6.8): Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This…

All CVEs affecting Open-xchange Dovecot →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →