CriticalFix available
tigervnc — security advisory
In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or cause an application crash, because of incorrect permissions.
- Products
- tigervnc
- Affected versions
- 1.12.0+dfsg-8, 1.13.1+dfsg-1, 1.13.1+dfsg-2, 1.13.1+dfsg-3, 1.14.1+dfsg-1, 1.15.0+dfsg-1, 1.15.0+dfsg-2, 1.15.0+dfsg-2.1, 1.15.0+dfsg-2.1~deb13u1, 1.15.0+dfsg-2.2, 1.16.2+dfsg-1
- Fixed versions
- 1.15.0+dfsg-2.1, 1.15.0+dfsg-2.1~deb13u1
- CVEs
- CVE-2026-34352
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 17:44 UTC · Revision 1
Source evidence
In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or cause an application crash, because of incorrect permissions.
osv:DEBIAN-CVE-2026-34352
tigervnc
Fixed versions: Not specified
tigervnc
Fixed versions: 1.15.0+dfsg-2.1~deb13u1
tigervnc
Fixed versions: 1.15.0+dfsg-2.1
Complete source record
{
"id": "3a12fec91c1ef4d36d4edbca9dffe496c4e8d7e922acd00547af842096bbfe92",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-34352",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-34352",
"summary": "In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or cause an application crash, because of incorrect permissions.",
"evidence": "osv:DEBIAN-CVE-2026-34352",
"products": [
{
"name": {
"value": "tigervnc",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.12.0+dfsg-8",
"evidence": "/affected/0/versions"
},
{
"value": "1.13.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.13.1+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.13.1+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.14.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.15.0+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.15.0+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.15.0+dfsg-2.1",
"evidence": "/affected/0/versions"
},
{
"value": "1.15.0+dfsg-2.1~deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "1.15.0+dfsg-2.2",
"evidence": "/affected/0/versions"
},
{
"value": "1.16.2+dfsg-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.15.0+dfsg-2.1~deb13u1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "1.15.0+dfsg-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.15.0+dfsg-2.1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.15.0+dfsg-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.15.0+dfsg-2.1~deb13u1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2026-34352",
"aliases": [
"DEBIAN-CVE-2026-34352"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/debian/tigervnc?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.12.0+dfsg-8",
"1.13.1+dfsg-1",
"1.13.1+dfsg-2",
"1.13.1+dfsg-3",
"1.14.1+dfsg-1",
"1.15.0+dfsg-1",
"1.15.0+dfsg-2",
"1.15.0+dfsg-2.1",
"1.15.0+dfsg-2.1~deb13u1",
"1.15.0+dfsg-2.2",
"1.16.2+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34352.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.0+dfsg-2.1~deb13u1"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/debian/tigervnc?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.15.0+dfsg-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34352.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.0+dfsg-2.1"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/debian/tigervnc?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.15.0+dfsg-2",
"1.15.0+dfsg-2.1~deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34352.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-22T06:00:11.484854397Z",
"provider": "osv",
"upstream": [
"CVE-2026-34352"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-34352"
]
},
"related_cves": [
{
"value": "CVE-2026-34352",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 404560,
"published_at": "2026-03-26T23:16:20.903+00:00"
}