High
Security advisory
Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-25275
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:22 UTC · Revision 1
Source evidence
Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.
osv:CVE-2020-25275
Complete source record
{
"id": "98029ba436ac2db1a4cc32b83bc8618a8a8f40d30d0e046be13ea3ccdc3c69d8",
"url": "https://osv.dev/vulnerability/CVE-2020-25275",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-25275",
"summary": "Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.",
"evidence": "osv:CVE-2020-25275",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-25275",
"aliases": [
"CVE-2020-25275"
],
"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": "89f716dc2ec7362864a368d32533184b55fb7831"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.3.13"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"2.2.20",
"2.2.20.rc1",
"2.2.19",
"2.2.19.rc2",
"2.2.19.rc1",
"2.2.18",
"2.2.17",
"2.2.17.rc2",
"2.2.17.rc1",
"2.2.16",
"2.2.16.rc1",
"2.2.15",
"2.2.14",
"2.2.14.rc1",
"2.2.13",
"2.2.13.rc1",
"2.2.12",
"2.2.11",
"2.2.10",
"2.2.9",
"2.2.8",
"2.2.7",
"2.2.6",
"2.2.5",
"2.2.4",
"2.2.3",
"2.2.2",
"2.2.1",
"2.2.0",
"2.2.rc7",
"2.2.rc6",
"2.2.rc5",
"2.2.rc4",
"2.2.rc3",
"2.2.rc2",
"2.2.rc1",
"2.2.beta2",
"2.2.beta1",
"2.2.alpha1",
"2.1.rc6",
"2.1.rc5",
"2.1.rc4",
"2.1.rc3",
"2.1.rc2",
"2.1.rc1",
"2.1.beta1",
"2.1.alpha2",
"2.1.alpha1",
"2.0.8",
"2.0.7",
"2.0.6",
"2.0.5",
"2.0.4",
"2.0.3",
"2.0.2",
"2.0.1",
"2.0.0",
"2.0.rc6",
"2.0.rc5",
"2.0.rc4",
"2.0.rc3",
"2.0.rc2",
"2.0.rc1",
"2.0.beta6",
"2.0.beta5",
"2.0.beta4",
"2.0.beta3",
"2.0.beta2",
"2.0.beta1",
"2.0.alpha3",
"2.0.alpha2",
"2.0.alpha1",
"1.2.rc1",
"1.2.beta4",
"1.2.beta3",
"1.2.beta2",
"1.2.beta1",
"1.2.alpha5",
"1.2.alpha4",
"1.2.alpha3",
"1.2.alpha2",
"1.2.alpha1",
"1.1.rc3",
"1.1.rc2",
"1.1.rc1",
"1.1.beta16",
"1.1.beta14",
"1.1.beta13",
"1.1.beta12",
"1.1.beta11",
"1.1.beta10",
"1.1.beta9",
"1.1.beta8",
"1.1.beta6",
"1.1.beta5",
"1.1.beta4",
"1.1.beta3",
"1.1.beta2",
"1.1.beta1",
"1.1.alpha6",
"1.1.alpha5",
"1.1.alpha4",
"1.1.alpha2",
"1.1.alpha1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-25275.json",
"vanir_signatures": [
{
"id": "CVE-2020-25275-1be4ae17",
"digest": {
"threshold": 0.9,
"line_hashes": [
"296346974619418808234080801214954265765",
"1471052776949459769501067374191512796",
"217466864070258896560181252484983121032",
"121720010689383301941536457495250671877"
]
},
"source": "https://github.com/dovecot/core/commit/89f716dc2ec7362864a368d32533184b55fb7831",
"target": {
"file": "src/stats/client-writer.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2020-25275-21d7f377",
"digest": {
"length": 682,
"function_hash": "137596555788539951219949077210898227457"
},
"source": "https://github.com/dovecot/core/commit/89f716dc2ec7362864a368d32533184b55fb7831",
"target": {
"file": "src/stats/client-writer.c",
"function": "writer_client_input_event_update"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2020-25275-27cee2ac",
"digest": {
"length": 1234,
"function_hash": "217181472971271504745876234057744284658"
},
"source": "https://github.com/dovecot/core/commit/89f716dc2ec7362864a368d32533184b55fb7831",
"target": {
"file": "src/lib-master/test-event-stats.c",
"function": "test_parent_update_post_send"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2020-25275-7e4b6371",
"digest": {
"threshold": 0.9,
"line_hashes": [
"278785260246161150248339674797392182783",
"268337524322404052174412187219750515495",
"260900042069470596651645167535238511843",
"215404735682128032450205611949595575148",
"95632903194647195604684242103969210521",
"334544074264257495251296982352358868461",
"272235226121168406138417059860516680638",
"94614832344236721621719220881383999969",
"133845085594569060567343773474855935093",
"231976961659895332335730835650040202731",
"215964019162609653939930531910218753698",
"124899298734637869030094386711232058176",
"208507113689900333926841062784169050884",
"22817438786077034395447909030443083472",
"61749333419936925221299181776486836621",
"230485890595458566265336413736305546876",
"148317764179313926954713425459965936713"
]
},
"source": "https://github.com/dovecot/core/commit/89f716dc2ec7362864a368d32533184b55fb7831",
"target": {
"file": "src/lib-master/stats-client.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2020-25275-b4c3550a",
"digest": {
"threshold": 0.9,
"line_hashes": [
"306008020808452989219003758236380952763",
"191947087068649407406175300183404404279",
"139115681704428535252617837725603962715",
"238716939131666563430944324612399042328"
]
},
"source": "https://github.com/dovecot/core/commit/89f716dc2ec7362864a368d32533184b55fb7831",
"target": {
"file": "src/lib-master/test-event-stats.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2020-25275-f32b5762",
"digest": {
"length": 795,
"function_hash": "186318130816510715596850195645109332825"
},
"source": "https://github.com/dovecot/core/commit/89f716dc2ec7362864a368d32533184b55fb7831",
"target": {
"file": "src/lib-master/stats-client.c",
"function": "stats_event_write"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:19:44Z"
}
}
],
"modified": "2026-10-24T14:19:44.135926706Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/",
"https://dovecot.org/pipermail/dovecot-news/2021-January/000451.html",
"https://dovecot.org/security",
"https://security.gentoo.org/glsa/202101-01",
"https://www.debian.org/security/2021/dsa-4825"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "32"
},
{
"last_affected": "32"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-25275",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443473,
"published_at": "2021-01-04T17:15:13.93+00:00"
}