Critical
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
- 1.10.1+dfsg-1, 1.10.1+dfsg-2, 1.10.1+dfsg-3, 1.10.1+dfsg-3ubuntu0.1+esm2, 1.10.1+dfsg-3ubuntu0.20.04.1, 1.10.1+dfsg-3ubuntu0.20.04.1+esm1, 1.11.0+dfsg-2ubuntu1, 1.12.0+dfsg-2, 1.12.0+dfsg-3, 1.12.0+dfsg-4, 1.12.0+dfsg-4ubuntu0.22.04.1, 1.12.0+dfsg-8, 1.13.1+dfsg-1, 1.13.1+dfsg-2, 1.13.1+dfsg-2build1, 1.13.1+dfsg-2build2, 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-2build1, 1.7.0+dfsg-7ubuntu1, 1.7.0+dfsg-8ubuntu2, 1.9.0+dfsg-3, 1.9.0+dfsg-4
- Fixed versions
- Not specified
- CVEs
- CVE-2026-34352
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:00 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:UBUNTU-CVE-2026-34352
tigervnc
Fixed versions: Not specified
tigervnc
Fixed versions: Not specified
tigervnc
Fixed versions: Not specified
tigervnc
Fixed versions: Not specified
tigervnc
Fixed versions: Not specified
tigervnc
Fixed versions: Not specified
tigervnc
Fixed versions: Not specified
Complete source record
{
"id": "3d5da1fcfb2772727458537d50c63c053551d7e3fcc9ba51689986cafe9c36bb",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-34352",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-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:UBUNTU-CVE-2026-34352",
"products": [
{
"name": {
"value": "tigervnc",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.7.0+dfsg-7ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.0+dfsg-8ubuntu2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.9.0+dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.0+dfsg-4",
"evidence": "/affected/1/versions"
},
{
"value": "1.10.1+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.10.1+dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.10.1+dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.10.1+dfsg-3ubuntu0.1+esm2",
"evidence": "/affected/1/versions"
},
{
"value": "1.10.1+dfsg-3ubuntu0.20.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "1.10.1+dfsg-3ubuntu0.20.04.1+esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.11.0+dfsg-2ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.0+dfsg-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.0+dfsg-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.0+dfsg-4",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.0+dfsg-4ubuntu0.22.04.1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.12.0+dfsg-8",
"evidence": "/affected/3/versions"
},
{
"value": "1.13.1+dfsg-1",
"evidence": "/affected/3/versions"
},
{
"value": "1.13.1+dfsg-2",
"evidence": "/affected/3/versions"
},
{
"value": "1.13.1+dfsg-2build1",
"evidence": "/affected/3/versions"
},
{
"value": "1.13.1+dfsg-2build2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.14.1+dfsg-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.15.0+dfsg-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.15.0+dfsg-2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.15.0+dfsg-2build1",
"evidence": "/affected/5/versions"
},
{
"value": "1.15.0+dfsg-2.1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "tigervnc",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.15.0+dfsg-2",
"evidence": "/affected/6/versions"
},
{
"value": "1.15.0+dfsg-2build1",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2026-34352",
"aliases": [
"UBUNTU-CVE-2026-34352"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.7.0+dfsg-7ubuntu1",
"1.7.0+dfsg-8ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34352.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tigervnc-common",
"binary_version": "1.7.0+dfsg-8ubuntu2"
},
{
"binary_name": "tigervnc-scraping-server",
"binary_version": "1.7.0+dfsg-8ubuntu2"
},
{
"binary_name": "tigervnc-standalone-server",
"binary_version": "1.7.0+dfsg-8ubuntu2"
},
{
"binary_name": "tigervnc-viewer",
"binary_version": "1.7.0+dfsg-8ubuntu2"
},
{
"binary_name": "tigervnc-xorg-extension",
"binary_version": "1.7.0+dfsg-8ubuntu2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"1.9.0+dfsg-3",
"1.9.0+dfsg-4",
"1.10.1+dfsg-1",
"1.10.1+dfsg-2",
"1.10.1+dfsg-3",
"1.10.1+dfsg-3ubuntu0.1+esm2",
"1.10.1+dfsg-3ubuntu0.20.04.1",
"1.10.1+dfsg-3ubuntu0.20.04.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34352.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tigervnc-common",
"binary_version": "1.10.1+dfsg-3ubuntu0.20.04.1+esm1"
},
{
"binary_name": "tigervnc-scraping-server",
"binary_version": "1.10.1+dfsg-3ubuntu0.20.04.1+esm1"
},
{
"binary_name": "tigervnc-standalone-server",
"binary_version": "1.10.1+dfsg-3ubuntu0.20.04.1+esm1"
},
{
"binary_name": "tigervnc-viewer",
"binary_version": "1.10.1+dfsg-3ubuntu0.20.04.1+esm1"
},
{
"binary_name": "tigervnc-xorg-extension",
"binary_version": "1.10.1+dfsg-3ubuntu0.20.04.1+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1.11.0+dfsg-2ubuntu1",
"1.12.0+dfsg-2",
"1.12.0+dfsg-3",
"1.12.0+dfsg-4",
"1.12.0+dfsg-4ubuntu0.22.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34352.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tigervnc-common",
"binary_version": "1.12.0+dfsg-4ubuntu0.22.04.1"
},
{
"binary_name": "tigervnc-scraping-server",
"binary_version": "1.12.0+dfsg-4ubuntu0.22.04.1"
},
{
"binary_name": "tigervnc-standalone-server",
"binary_version": "1.12.0+dfsg-4ubuntu0.22.04.1"
},
{
"binary_name": "tigervnc-tools",
"binary_version": "1.12.0+dfsg-4ubuntu0.22.04.1"
},
{
"binary_name": "tigervnc-viewer",
"binary_version": "1.12.0+dfsg-4ubuntu0.22.04.1"
},
{
"binary_name": "tigervnc-xorg-extension",
"binary_version": "1.12.0+dfsg-4ubuntu0.22.04.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1.12.0+dfsg-8",
"1.13.1+dfsg-1",
"1.13.1+dfsg-2",
"1.13.1+dfsg-2build1",
"1.13.1+dfsg-2build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34352.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tigervnc-common",
"binary_version": "1.13.1+dfsg-2build2"
},
{
"binary_name": "tigervnc-scraping-server",
"binary_version": "1.13.1+dfsg-2build2"
},
{
"binary_name": "tigervnc-standalone-server",
"binary_version": "1.13.1+dfsg-2build2"
},
{
"binary_name": "tigervnc-tools",
"binary_version": "1.13.1+dfsg-2build2"
},
{
"binary_name": "tigervnc-viewer",
"binary_version": "1.13.1+dfsg-2build2"
},
{
"binary_name": "tigervnc-xorg-extension",
"binary_version": "1.13.1+dfsg-2build2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1.14.1+dfsg-1",
"1.15.0+dfsg-1",
"1.15.0+dfsg-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34352.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tigervnc-common",
"binary_version": "1.15.0+dfsg-2"
},
{
"binary_name": "tigervnc-scraping-server",
"binary_version": "1.15.0+dfsg-2"
},
{
"binary_name": "tigervnc-standalone-server",
"binary_version": "1.15.0+dfsg-2"
},
{
"binary_name": "tigervnc-tools",
"binary_version": "1.15.0+dfsg-2"
},
{
"binary_name": "tigervnc-viewer",
"binary_version": "1.15.0+dfsg-2"
},
{
"binary_name": "tigervnc-xorg-extension",
"binary_version": "1.15.0+dfsg-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1.15.0+dfsg-2build1",
"1.15.0+dfsg-2.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34352.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tigervnc-common",
"binary_version": "1.15.0+dfsg-2.1"
},
{
"binary_name": "tigervnc-scraping-server",
"binary_version": "1.15.0+dfsg-2.1"
},
{
"binary_name": "tigervnc-standalone-server",
"binary_version": "1.15.0+dfsg-2.1"
},
{
"binary_name": "tigervnc-tools",
"binary_version": "1.15.0+dfsg-2.1"
},
{
"binary_name": "tigervnc-viewer",
"binary_version": "1.15.0+dfsg-2.1"
},
{
"binary_name": "tigervnc-xorg-extension",
"binary_version": "1.15.0+dfsg-2.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.15.0+dfsg-2",
"1.15.0+dfsg-2build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34352.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tigervnc-common",
"binary_version": "1.15.0+dfsg-2build1"
},
{
"binary_name": "tigervnc-scraping-server",
"binary_version": "1.15.0+dfsg-2build1"
},
{
"binary_name": "tigervnc-standalone-server",
"binary_version": "1.15.0+dfsg-2build1"
},
{
"binary_name": "tigervnc-tools",
"binary_version": "1.15.0+dfsg-2build1"
},
{
"binary_name": "tigervnc-viewer",
"binary_version": "1.15.0+dfsg-2build1"
},
{
"binary_name": "tigervnc-xorg-extension",
"binary_version": "1.15.0+dfsg-2build1"
}
]
}
}
],
"modified": "2026-10-17T13:00:01.393630857Z",
"provider": "osv",
"upstream": [
"CVE-2026-34352"
],
"references": [
"https://ubuntu.com/security/CVE-2026-34352",
"https://www.cve.org/CVERecord?id=CVE-2026-34352",
"https://groups.google.com/g/tigervnc-announce/c/anHL9WLshLI",
"https://www.openwall.com/lists/oss-security/2026/03/26/7",
"https://github.com/TigerVNC/tigervnc/commit/0b5cab169d847789efa54459a87659d3fd484393",
"https://sourceforge.net/projects/tigervnc/files/stable/1.16.2"
]
},
"related_cves": [
{
"value": "CVE-2026-34352",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 360138,
"published_at": "2026-03-26T23:16:00+00:00"
}