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CVE-2025-59032

29
FAUCET Score

CVE-2025-59032 is a high-severity vulnerability affecting the ManageSieve service, where a specially crafted AUTHENTICATE command using a literal as a SASL initial response can cause the service to crash. Rated with a CVSS score of 7.5, this network-exploitable flaw has low attack complexity and requires no privileges or user interaction, leading to a high impact on service availability through repeated denial-of-service attacks. There are currently no known public exploits, exploit code, or evidence of active exploitation, and only minimal community discussion has been observed.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.3CPE matchmatch criteria
cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*
< 3.1.3CPE matchmatch criteria
cpe:2.3:a:open-xchange:dovecot:*:*:*:*:pro:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 26th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

freeswitchpatch availablevia llm_extracted
View patch
ubuntupatch availablevia ubuntu_usn
Product: dovecot (jammy)Fixed in: 1:2.3.16+dfsg1-3ubuntu2.7
ubuntupatch availablevia ubuntu_usn
Product: dovecot (noble)Fixed in: 1:2.3.21+dfsg1-2ubuntu6.3
ubuntupatch availablevia ubuntu_usn
Product: dovecot (questing)Fixed in: 1:2.4.1+dfsg1-5ubuntu4.1

Vendor Advisories (2)

ubuntuUSN-8136-1

Dovecot vulnerabilities

Mar 31, 2026
freeswitchllm-freeswitch-e0792d32da627607

v2.4/v3.1 regression: Pigeonhole: ManageSieve panic occurs with sieve-connect as a client. ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response.

Mar 27, 2026

References

access.redhat.com / errata/RHSA-2026:13498
access.redhat.com / errata/RHSA-2026:13830
access.redhat.com / errata/RHSA-2026:13857
access.redhat.com / errata/RHSA-2026:17602
access.redhat.com / errata/RHSA-2026:17625
access.redhat.com / errata/RHSA-2026:17626
access.redhat.com / errata/RHSA-2026:17628
access.redhat.com / errata/RHSA-2026:17630
access.redhat.com / errata/RHSA-2026:18053
access.redhat.com / errata/RHSA-2026:19149
access.redhat.com / errata/RHSA-2026:19364
access.redhat.com / errata/RHSA-2026:19453
access.redhat.com / errata/RHSA-2026:19455
access.redhat.com / errata/RHSA-2026:26564
access.redhat.com / security/cve/CVE-2025-59032
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2025/cve-2025-59032.json
documentation.open-xchange.com / dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json
Vendor Advisory