HighFix available
libz-mingw-w64, zlib — security advisory
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.
- Products
- libz-mingw-w64, zlib
- Affected versions
- Not specified
- Fixed versions
- 1.2.11+dfsg-5, 1:1.2.11.dfsg-4
- CVEs
- CVE-2018-25032
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:22 UTC · Revision 1
Source evidence
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.
osv:DEBIAN-CVE-2018-25032
libz-mingw-w64
Fixed versions: 1.2.11+dfsg-5
libz-mingw-w64
Fixed versions: 1.2.11+dfsg-5
libz-mingw-w64
Fixed versions: 1.2.11+dfsg-5
zlib
Fixed versions: 1:1.2.11.dfsg-4
zlib
Fixed versions: 1:1.2.11.dfsg-4
zlib
Fixed versions: 1:1.2.11.dfsg-4
Complete source record
{
"id": "a866e0055ec286ee8a0f788e17fbcffbb439ddf844732f40894c016f10ca99ff",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-25032",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-25032",
"summary": "zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.",
"evidence": "osv:DEBIAN-CVE-2018-25032",
"products": [
{
"name": {
"value": "libz-mingw-w64",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.2.11+dfsg-5",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libz-mingw-w64",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.2.11+dfsg-5",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libz-mingw-w64",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.2.11+dfsg-5",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "zlib",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.2.11.dfsg-4",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "zlib",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.2.11.dfsg-4",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "zlib",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.2.11.dfsg-4",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2018-25032",
"aliases": [
"DEBIAN-CVE-2018-25032"
],
"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": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.11+dfsg-5"
}
]
}
],
"package": {
"name": "libz-mingw-w64",
"purl": "pkg:deb/debian/libz-mingw-w64?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-25032.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.11+dfsg-5"
}
]
}
],
"package": {
"name": "libz-mingw-w64",
"purl": "pkg:deb/debian/libz-mingw-w64?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-25032.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.11+dfsg-5"
}
]
}
],
"package": {
"name": "libz-mingw-w64",
"purl": "pkg:deb/debian/libz-mingw-w64?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-25032.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.11.dfsg-4"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-25032.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.11.dfsg-4"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-25032.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.11.dfsg-4"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-25032.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T07:47:32.082869362Z",
"provider": "osv",
"upstream": [
"CVE-2018-25032"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-25032"
]
},
"related_cves": [
{
"value": "CVE-2018-25032",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 322217,
"published_at": "2022-03-25T09:15:08.187+00:00"
}