High
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-59032
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 01:31 UTC · Revision 1
Source evidence
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.
osv:CVE-2025-59032
Complete source record
{
"id": "ef7920622114b496f80d9741d3e4c87cc88ea2f72d23c216d11c5ea84785c003",
"url": "https://osv.dev/vulnerability/CVE-2025-59032",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-59032",
"summary": "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.",
"evidence": "osv:CVE-2025-59032",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2025-59032",
"aliases": [
"CVE-2025-59032"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/dovecot/core",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "c1b22ef978ca72999e254b2f3964b3d32d1a4979"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*",
"range": [
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},
{
"fixed": "2.4.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
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"versions": [
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"1.1.alpha6",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-59032.json"
}
}
],
"modified": "2026-10-28T02:30:52.417562419Z",
"provider": "osv",
"references": [
"https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59032.json",
"https://access.redhat.com/errata/RHSA-2026:13498",
"https://access.redhat.com/errata/RHSA-2026:13830",
"https://access.redhat.com/errata/RHSA-2026:13857",
"https://access.redhat.com/errata/RHSA-2026:17602",
"https://access.redhat.com/errata/RHSA-2026:17625",
"https://access.redhat.com/errata/RHSA-2026:17626",
"https://access.redhat.com/errata/RHSA-2026:17628",
"https://access.redhat.com/errata/RHSA-2026:17630",
"https://access.redhat.com/errata/RHSA-2026:18053",
"https://access.redhat.com/errata/RHSA-2026:19149",
"https://access.redhat.com/errata/RHSA-2026:19364",
"https://access.redhat.com/errata/RHSA-2026:19453",
"https://access.redhat.com/errata/RHSA-2026:19455",
"https://access.redhat.com/errata/RHSA-2026:26564",
"https://access.redhat.com/security/cve/CVE-2025-59032",
"https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59032.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-59032",
"https://bugzilla.redhat.com/show_bug.cgi?id=2452172"
],
"provider_metadata": {
"cwe_ids": [
"CWE-20"
],
"cna_assigner": "OX",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"last_affected": "3.1.0"
},
{
"last_affected": "2.4.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59032.json"
}
},
"related_cves": [
{
"value": "CVE-2025-59032",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 521368,
"published_at": "2026-03-27T08:10:16.612+00:00"
}