CVE-2025-59032

HIGH
7.5
CVSS Score
Published: March 27, 2026 at 08:10 AM UTC
Updated: October 7, 2026 at 09:10 AM UTC
3 products affected across 3 vendorsDovecotOX DovecotEnterprise Linux

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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response. This can be used to crash ManageSieve service repeatedly, making it unavailable for other users. Control access to ManageSieve port, or disable the service if it's not needed. Alternatively upgrade to a fixed version. No publicly available exploits are known.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.4.3
Affected range stops below 2.4.3, so it looks safe — our inference, not a vendor statement
v ≤ 2.4.0v ≤ 3.1.0v < 3.1.3
Affected range stops below 3.1.3, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 1:2.2.36-8.el7_9.1 (unaffected)
Vendor states this is fixed in 1:2.3.16-11.el9_4.2 (unaffected)
Vendor states this is fixed in 1:2.3.16-15.el9_6.1 (unaffected)
Vendor states this is fixed in 1:2.3.16-15.el9_7.1 (unaffected)
Vendor states this is fixed in 1:2.3.16-18.el9_8 (unaffected)
Vendor states this is fixed in 1:2.3.16-2.el8_6.1 (unaffected)
Vendor states this is fixed in 1:2.3.16-3.el8_8.1 (unaffected)
Vendor states this is fixed in 1:2.3.16-3.el9_0.1 (unaffected)
Vendor states this is fixed in 1:2.3.16-7.el8_10 (unaffected)
Vendor states this is fixed in 1:2.3.16-8.el9_2.2 (unaffected)
Vendor states this is fixed in 1:2.3.21-16.el10_0.1 (unaffected)
Vendor states this is fixed in 1:2.3.21-16.el10_1.1 (unaffected)
Vendor states this is fixed in 1:2.3.21-19.el10_2 (unaffected)
Vendor states this is fixed in 1:2.3.8-9.el8_4.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (18)

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:13498
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:13830
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:13857
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:17602
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:17625
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:17626
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:17628

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHOX
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfoCWE-229

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