UBUNTU-CVE-2026-34352 (CVE-2026-34352)
Vulnerability from osv_ubuntu – Published: 2026-03-26 23:16 – Updated: 2026-10-17 09:40 – Source website
VLAI
Details
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.
Severity
8.5 (High)
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc@1.7.0+dfsg-8ubuntu2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.7.0+dfsg-7ubuntu1",
"1.7.0+dfsg-8ubuntu2"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc@1.10.1+dfsg-3ubuntu0.20.04.1+esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc@1.12.0+dfsg-4ubuntu0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc@1.13.1+dfsg-2build2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc@1.15.0+dfsg-2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.14.1+dfsg-1",
"1.15.0+dfsg-1",
"1.15.0+dfsg-2"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.10",
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc@1.15.0+dfsg-2.1?arch=source\u0026distro=stonking"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.15.0+dfsg-2build1",
"1.15.0+dfsg-2.1"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "tigervnc",
"purl": "pkg:deb/ubuntu/tigervnc@1.15.0+dfsg-2build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.15.0+dfsg-2",
"1.15.0+dfsg-2build1"
]
}
],
"aliases": [],
"details": "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.",
"id": "UBUNTU-CVE-2026-34352",
"modified": "2026-10-17T09:40:52Z",
"published": "2026-03-26T23:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-34352"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-34352"
},
{
"type": "REPORT",
"url": "https://groups.google.com/g/tigervnc-announce/c/anHL9WLshLI"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2026/03/26/7"
},
{
"type": "REPORT",
"url": "https://github.com/TigerVNC/tigervnc/commit/0b5cab169d847789efa54459a87659d3fd484393"
},
{
"type": "REPORT",
"url": "https://sourceforge.net/projects/tigervnc/files/stable/1.16.2"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"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": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-34352"
]
}
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