UnratedFix available
libvncserver, veyon — security advisory
Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.
- Products
- libvncserver, veyon
- Affected versions
- Not specified
- Fixed versions
- 0.9.9+dfsg-6.1, 4.1.4+repack1-1
- CVEs
- CVE-2014-6051
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:37 UTC · Revision 1
Source evidence
Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.
osv:DEBIAN-CVE-2014-6051
libvncserver
Fixed versions: 0.9.9+dfsg-6.1
libvncserver
Fixed versions: 0.9.9+dfsg-6.1
libvncserver
Fixed versions: 0.9.9+dfsg-6.1
veyon
Fixed versions: 4.1.4+repack1-1
veyon
Fixed versions: 4.1.4+repack1-1
Complete source record
{
"id": "76807aaf737c0e8b9fd8be752093dfc1dfd31d93ad49c6f04e625ac2df8a61f4",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2014-6051",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2014-6051",
"summary": "Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.",
"evidence": "osv:DEBIAN-CVE-2014-6051",
"products": [
{
"name": {
"value": "libvncserver",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.9.9+dfsg-6.1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libvncserver",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.9.9+dfsg-6.1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libvncserver",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.9.9+dfsg-6.1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "veyon",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.1.4+repack1-1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "veyon",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.1.4+repack1-1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2014-6051",
"aliases": [
"DEBIAN-CVE-2014-6051"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.9+dfsg-6.1"
}
]
}
],
"package": {
"name": "libvncserver",
"purl": "pkg:deb/debian/libvncserver?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-6051.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.9+dfsg-6.1"
}
]
}
],
"package": {
"name": "libvncserver",
"purl": "pkg:deb/debian/libvncserver?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-6051.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.9+dfsg-6.1"
}
]
}
],
"package": {
"name": "libvncserver",
"purl": "pkg:deb/debian/libvncserver?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-6051.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.4+repack1-1"
}
]
}
],
"package": {
"name": "veyon",
"purl": "pkg:deb/debian/veyon?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-6051.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.4+repack1-1"
}
]
}
],
"package": {
"name": "veyon",
"purl": "pkg:deb/debian/veyon?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-6051.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T15:47:26.082313814Z",
"provider": "osv",
"upstream": [
"CVE-2014-6051"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2014-6051"
]
},
"related_cves": [
{
"value": "CVE-2014-6051",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 413871,
"published_at": "2014-09-30T16:55:07.01+00:00"
}