libvncserver, ssvnc and 4 more products — security advisory
TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.
- Products
- libvncserver, ssvnc, tightvnc, veyon, vncsnapshot, x11vnc
- Affected versions
- 0.9.10+dfsg-3, 0.9.10+dfsg-3build1, 0.9.10+dfsg-3ubuntu0.16.04.1, 0.9.10+dfsg-3ubuntu0.16.04.2, 0.9.10+dfsg-3ubuntu0.16.04.3, 0.9.11+dfsg-1, 0.9.11+dfsg-1.3, 0.9.11+dfsg-1ubuntu1, 0.9.11+dfsg-1ubuntu1.1, 0.9.12+dfsg-3ubuntu3, 0.9.12+dfsg-6, 0.9.12+dfsg-7, 0.9.12+dfsg-8, 0.9.12+dfsg-9, 0.9.13-1.1, 1.0.29-2+deb8u1build0.16.04.1, 1.0.29-2build1, 1.0.29-3, 1.0.29-3build1, 1.0.29-4build1, 1.0.29-5, 1.0.29-5build1, 1.0.29-6, 1.0.29-6.1, 1.0.29-6ubuntu1, 1.0.29-6ubuntu2, 1.0.29-6ubuntu3, 1.0.29-7, 1.0.29-7build1, 1.0.29-7build2, 1.2a-5.1, 1.2a-5.1build1, 1.2a-5.1build2, 1.2a-5.2, 1.2a-6, 1.2a-7, 1.2a-7build1, 1.3.10-0ubuntu2, 1.3.10-0ubuntu3, 1.3.10-0ubuntu4, 1.3.10-0ubuntu5, 1.3.9-6.4, 1.3.9-6.4ubuntu1, 1:1.3.10-10, 1:1.3.10-10build1, 1:1.3.10-11, 1:1.3.10-3, 1:1.3.10-5, 1:1.3.10-7, 1:1.3.10-7build1, 1:1.3.10-7build2, 1:1.3.10-8, 1:1.3.10-9, 4.2.4+repack1-2, 4.2.5+repack1-1, 4.3.1+repack1-1, 4.3.1+repack1-2, 4.3.1+repack1-2build1, 4.3.1+repack1-2build2, 4.5.3+repack1-1build1, 4.5.3+repack1-1build2, 4.7.5+repack1-1build2, 4.7.5+repack1-1ubuntu1, 4.7.5+repack1-1ubuntu3, 4.7.5+repack1-1ubuntu4, 4.7.5+repack1-1ubuntu5, 4.7.5+repack1-1ubuntu6, 4.7.5+repack1-1ubuntu7, 4.9.7+repack1-1, 4.9.7+repack1-1.1, 4.9.7+repack1-1.1build1, 4.9.7+repack1-1.1build2, 4.9.7+repack1-1build1
- Fixed versions
- 0.9.10+dfsg-3ubuntu0.16.04.4, 0.9.11+dfsg-1ubuntu1.2, 0.9.12+dfsg-9ubuntu0.1, 1.3.9-6.5+deb8u1build0.14.04.1~esm1
- CVEs
- CVE-2019-15680
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:33 UTC · Revision 1
Source evidence
TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.
osv:UBUNTU-CVE-2019-15680
tightvnc
Fixed versions: 1.3.9-6.5+deb8u1build0.14.04.1~esm1
x11vnc
Fixed versions: Not specified
libvncserver
Fixed versions: 0.9.10+dfsg-3ubuntu0.16.04.4
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
libvncserver
Fixed versions: 0.9.11+dfsg-1ubuntu1.2
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
libvncserver
Fixed versions: 0.9.12+dfsg-9ubuntu0.1
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
veyon
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
veyon
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
veyon
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
veyon
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
veyon
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
ssvnc
Fixed versions: Not specified
tightvnc
Fixed versions: Not specified
veyon
Fixed versions: Not specified
vncsnapshot
Fixed versions: Not specified
Complete source record
{
"id": "fc15df69cdf4a74c433b1cadbf94f6c84d1b157d7160e4d106ac67e899687d59",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2019-15680",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2019-15680",
"summary": "TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.",
"evidence": "osv:UBUNTU-CVE-2019-15680",
"products": [
{
"name": {
"value": "tightvnc",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.3.9-6.5+deb8u1build0.14.04.1~esm1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "1.3.9-6.4",
"evidence": "/affected/0/versions"
},
{
"value": "1.3.9-6.4ubuntu1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "x11vnc",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.9.13-1.1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "libvncserver",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.9.10+dfsg-3ubuntu0.16.04.4",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "0.9.10+dfsg-3",
"evidence": "/affected/2/versions"
},
{
"value": "0.9.10+dfsg-3build1",
"evidence": "/affected/2/versions"
},
{
"value": "0.9.10+dfsg-3ubuntu0.16.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.9.10+dfsg-3ubuntu0.16.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "0.9.10+dfsg-3ubuntu0.16.04.3",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-2build1",
"evidence": "/affected/3/versions"
},
{
"value": "1.0.29-2+deb8u1build0.16.04.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.10-0ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "1.3.10-0ubuntu3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-5.1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "libvncserver",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.9.11+dfsg-1ubuntu1.2",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": [
{
"value": "0.9.11+dfsg-1",
"evidence": "/affected/6/versions"
},
{
"value": "0.9.11+dfsg-1ubuntu1",
"evidence": "/affected/6/versions"
},
{
"value": "0.9.11+dfsg-1ubuntu1.1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-3",
"evidence": "/affected/7/versions"
},
{
"value": "1.0.29-3build1",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.10-0ubuntu3",
"evidence": "/affected/8/versions"
},
{
"value": "1.3.10-0ubuntu4",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-5.1",
"evidence": "/affected/9/versions"
},
{
"value": "1.2a-5.1build1",
"evidence": "/affected/9/versions"
}
]
},
{
"name": {
"value": "libvncserver",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.9.12+dfsg-9ubuntu0.1",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": [
{
"value": "0.9.11+dfsg-1.3",
"evidence": "/affected/10/versions"
},
{
"value": "0.9.12+dfsg-3ubuntu3",
"evidence": "/affected/10/versions"
},
{
"value": "0.9.12+dfsg-6",
"evidence": "/affected/10/versions"
},
{
"value": "0.9.12+dfsg-7",
"evidence": "/affected/10/versions"
},
{
"value": "0.9.12+dfsg-8",
"evidence": "/affected/10/versions"
},
{
"value": "0.9.12+dfsg-9",
"evidence": "/affected/10/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-4build1",
"evidence": "/affected/11/versions"
},
{
"value": "1.0.29-5",
"evidence": "/affected/11/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.10-0ubuntu5",
"evidence": "/affected/12/versions"
}
]
},
{
"name": {
"value": "veyon",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.4+repack1-2",
"evidence": "/affected/13/versions"
},
{
"value": "4.2.5+repack1-1",
"evidence": "/affected/13/versions"
},
{
"value": "4.3.1+repack1-1",
"evidence": "/affected/13/versions"
},
{
"value": "4.3.1+repack1-2",
"evidence": "/affected/13/versions"
},
{
"value": "4.3.1+repack1-2build1",
"evidence": "/affected/13/versions"
},
{
"value": "4.3.1+repack1-2build2",
"evidence": "/affected/13/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-5.1build1",
"evidence": "/affected/14/versions"
},
{
"value": "1.2a-5.1build2",
"evidence": "/affected/14/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-5",
"evidence": "/affected/15/versions"
},
{
"value": "1.0.29-5build1",
"evidence": "/affected/15/versions"
},
{
"value": "1.0.29-6",
"evidence": "/affected/15/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/16/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.3.10-3",
"evidence": "/affected/16/versions"
},
{
"value": "1:1.3.10-5",
"evidence": "/affected/16/versions"
}
]
},
{
"name": {
"value": "veyon",
"evidence": "/affected/17/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.5.3+repack1-1build1",
"evidence": "/affected/17/versions"
},
{
"value": "4.5.3+repack1-1build2",
"evidence": "/affected/17/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/18/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-5.1build2",
"evidence": "/affected/18/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/19/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-6",
"evidence": "/affected/19/versions"
},
{
"value": "1.0.29-6ubuntu1",
"evidence": "/affected/19/versions"
},
{
"value": "1.0.29-6ubuntu2",
"evidence": "/affected/19/versions"
},
{
"value": "1.0.29-6ubuntu3",
"evidence": "/affected/19/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/20/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.3.10-7",
"evidence": "/affected/20/versions"
},
{
"value": "1:1.3.10-7build1",
"evidence": "/affected/20/versions"
},
{
"value": "1:1.3.10-7build2",
"evidence": "/affected/20/versions"
},
{
"value": "1:1.3.10-8",
"evidence": "/affected/20/versions"
}
]
},
{
"name": {
"value": "veyon",
"evidence": "/affected/21/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.7.5+repack1-1build2",
"evidence": "/affected/21/versions"
},
{
"value": "4.7.5+repack1-1ubuntu1",
"evidence": "/affected/21/versions"
},
{
"value": "4.7.5+repack1-1ubuntu3",
"evidence": "/affected/21/versions"
},
{
"value": "4.7.5+repack1-1ubuntu4",
"evidence": "/affected/21/versions"
},
{
"value": "4.7.5+repack1-1ubuntu5",
"evidence": "/affected/21/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/22/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-5.2",
"evidence": "/affected/22/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/23/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-6.1",
"evidence": "/affected/23/versions"
},
{
"value": "1.0.29-7",
"evidence": "/affected/23/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/24/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.3.10-9",
"evidence": "/affected/24/versions"
},
{
"value": "1:1.3.10-10",
"evidence": "/affected/24/versions"
}
]
},
{
"name": {
"value": "veyon",
"evidence": "/affected/25/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.7.5+repack1-1ubuntu6",
"evidence": "/affected/25/versions"
},
{
"value": "4.7.5+repack1-1ubuntu7",
"evidence": "/affected/25/versions"
},
{
"value": "4.9.7+repack1-1",
"evidence": "/affected/25/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/26/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-6",
"evidence": "/affected/26/versions"
},
{
"value": "1.2a-7",
"evidence": "/affected/26/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/27/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-7build1",
"evidence": "/affected/27/versions"
},
{
"value": "1.0.29-7build2",
"evidence": "/affected/27/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/28/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.3.10-10build1",
"evidence": "/affected/28/versions"
},
{
"value": "1:1.3.10-11",
"evidence": "/affected/28/versions"
}
]
},
{
"name": {
"value": "veyon",
"evidence": "/affected/29/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.9.7+repack1-1build1",
"evidence": "/affected/29/versions"
},
{
"value": "4.9.7+repack1-1.1",
"evidence": "/affected/29/versions"
},
{
"value": "4.9.7+repack1-1.1build1",
"evidence": "/affected/29/versions"
},
{
"value": "4.9.7+repack1-1.1build2",
"evidence": "/affected/29/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/30/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-7build1",
"evidence": "/affected/30/versions"
}
]
},
{
"name": {
"value": "ssvnc",
"evidence": "/affected/31/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.29-7",
"evidence": "/affected/31/versions"
},
{
"value": "1.0.29-7build1",
"evidence": "/affected/31/versions"
}
]
},
{
"name": {
"value": "tightvnc",
"evidence": "/affected/32/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.3.10-10",
"evidence": "/affected/32/versions"
},
{
"value": "1:1.3.10-10build1",
"evidence": "/affected/32/versions"
}
]
},
{
"name": {
"value": "veyon",
"evidence": "/affected/33/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.9.7+repack1-1",
"evidence": "/affected/33/versions"
},
{
"value": "4.9.7+repack1-1build1",
"evidence": "/affected/33/versions"
}
]
},
{
"name": {
"value": "vncsnapshot",
"evidence": "/affected/34/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.2a-7",
"evidence": "/affected/34/versions"
},
{
"value": "1.2a-7build1",
"evidence": "/affected/34/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2019-15680",
"aliases": [
"UBUNTU-CVE-2019-15680"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.9-6.5+deb8u1build0.14.04.1~esm1"
}
]
}
],
"package": {
"name": "tightvnc",
"purl": "pkg:deb/ubuntu/tightvnc?arch=source&distro=trusty%2Fesm",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
"1.3.9-6.4",
"1.3.9-6.4ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-15680.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tightvncserver",
"binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1"
},
{
"binary_name": "xtightvncviewer",
"binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "x11vnc",
"purl": "pkg:deb/ubuntu/x11vnc?arch=source&distro=trusty",
"ecosystem": "Ubuntu:14.04:LTS"
},
"versions": [
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],
"modified": "2026-10-17T12:55:39.334483046Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2019-15680",
"https://www.openwall.com/lists/oss-security/2018/12/10/5",
"https://ubuntu.com/security/notices/USN-4407-1",
"https://www.cve.org/CVERecord?id=CVE-2019-15680"
]
},
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{
"value": "CVE-2019-15680",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 353954,
"published_at": "2019-10-29T19:15:00+00:00"
}