CVE-2025-59032: Improper Input Validation in Open-Xchange GmbH OX Dovecot Pro
CVE-2025-59032 is a high-severity vulnerability in Open-Xchange GmbH's OX Dovecot Pro affecting the ManageSieve AUTHENTICATE command. The issue arises when a literal is used as the SASL initial response, causing the ManageSieve service to crash repeatedly. This results in a denial of service condition, making the service unavailable to legitimate users. No public exploits are currently known. Mitigation includes controlling access to the ManageSieve port, disabling the service if not needed, or upgrading to a fixed version once available.
AI Analysis
Technical Summary
The vulnerability CVE-2025-59032 in OX Dovecot Pro involves improper input validation in the ManageSieve AUTHENTICATE command. When a literal is used as the SASL initial response, it triggers a crash of the ManageSieve service. This can be exploited to repeatedly crash the service, causing denial of service. The vulnerability has a CVSS 3.1 base score of 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. No known public exploits exist at this time.
Potential Impact
Successful exploitation causes repeated crashes of the ManageSieve service, resulting in denial of service and unavailability of the service to legitimate users. There is no impact on confidentiality or integrity reported. No known exploits in the wild have been observed.
Mitigation Recommendations
Currently, no official patch or fixed version details are provided. Recommended mitigations include restricting access to the ManageSieve port to trusted users only and disabling the ManageSieve service if it is not required. Users should monitor vendor advisories for availability of a fixed version and upgrade promptly once released.
CVE-2025-59032: Improper Input Validation in Open-Xchange GmbH OX Dovecot Pro
Description
CVE-2025-59032 is a high-severity vulnerability in Open-Xchange GmbH's OX Dovecot Pro affecting the ManageSieve AUTHENTICATE command. The issue arises when a literal is used as the SASL initial response, causing the ManageSieve service to crash repeatedly. This results in a denial of service condition, making the service unavailable to legitimate users. No public exploits are currently known. Mitigation includes controlling access to the ManageSieve port, disabling the service if not needed, or upgrading to a fixed version once available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2025-59032 in OX Dovecot Pro involves improper input validation in the ManageSieve AUTHENTICATE command. When a literal is used as the SASL initial response, it triggers a crash of the ManageSieve service. This can be exploited to repeatedly crash the service, causing denial of service. The vulnerability has a CVSS 3.1 base score of 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. No known public exploits exist at this time.
Potential Impact
Successful exploitation causes repeated crashes of the ManageSieve service, resulting in denial of service and unavailability of the service to legitimate users. There is no impact on confidentiality or integrity reported. No known exploits in the wild have been observed.
Mitigation Recommendations
Currently, no official patch or fixed version details are provided. Recommended mitigations include restricting access to the ManageSieve port to trusted users only and disabling the ManageSieve service if it is not required. Users should monitor vendor advisories for availability of a fixed version and upgrade promptly once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- OX
- Date Reserved
- 2025-09-08T14:22:28.105Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69c63ffa3c064ed76f701a4b
Added to database: 3/27/2026, 8:29:46 AM
Last enriched: 4/3/2026, 1:33:48 PM
Last updated: 5/11/2026, 5:59:27 AM
Views: 57
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