HighFix available
gst-plugins-bad1.0 — security advisory
A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.
- Products
- gst-plugins-bad1.0
- Affected versions
- 1.22.0-4, 1.22.0-4+deb12u1, 1.22.0-4+deb12u2, 1.22.0-4+deb12u3, 1.22.0-4+deb12u4, 1.22.0-4+deb12u5, 1.22.0-4+deb12u6, 1.22.0-4+deb12u7, 1.26.10-1, 1.26.10-2, 1.26.2-3, 1.26.2-3+deb13u1, 1.26.2-3+deb13u2, 1.26.3-1, 1.26.4-1, 1.26.5-1, 1.26.5-2, 1.26.6-1, 1.26.6-2, 1.26.6-3, 1.26.6-4, 1.26.6-5, 1.26.7-1, 1.26.7-2, 1.26.8-1, 1.26.9-1, 1.27.1-1, 1.27.2-1, 1.27.50-1, 1.27.90-1, 1.27.90-2, 1.27.90-3, 1.28.0-1, 1.28.1-1, 1.28.1-2, 1.28.1-3, 1.28.2-1, 1.28.2-2, 1.28.3-1, 1.28.4-1
- Fixed versions
- 1.22.0-4+deb12u8, 1.26.2-3+deb13u3, 1.28.5-1
- CVEs
- CVE-2026-52720
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 20:35 UTC · Revision 1
Source evidence
A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.
osv:DEBIAN-CVE-2026-52720
gst-plugins-bad1.0
Fixed versions: 1.22.0-4+deb12u8
gst-plugins-bad1.0
Fixed versions: 1.26.2-3+deb13u3
gst-plugins-bad1.0
Fixed versions: 1.28.5-1
Complete source record
{
"id": "f76f052e1160251c11eb76d87b1b707ca87bb8ba8b2e0ebed2d33dd8909192c3",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-52720",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-52720",
"summary": "A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.",
"evidence": "osv:DEBIAN-CVE-2026-52720",
"products": [
{
"name": {
"value": "gst-plugins-bad1.0",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "1.22.0-4",
"evidence": "/affected/0/versions"
},
{
"value": "1.22.0-4+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "1.22.0-4+deb12u2",
"evidence": "/affected/0/versions"
},
{
"value": "1.22.0-4+deb12u3",
"evidence": "/affected/0/versions"
},
{
"value": "1.22.0-4+deb12u4",
"evidence": "/affected/0/versions"
},
{
"value": "1.22.0-4+deb12u5",
"evidence": "/affected/0/versions"
},
{
"value": "1.22.0-4+deb12u6",
"evidence": "/affected/0/versions"
},
{
"value": "1.22.0-4+deb12u7",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.26.2-3+deb13u3",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "1.26.2-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.26.2-3+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "1.26.2-3+deb13u2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "gst-plugins-bad1.0",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.28.5-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.26.10-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.10-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.2-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.5-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.5-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.6-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.6-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.6-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.6-4",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.6-5",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.7-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.7-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.8-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.26.9-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.27.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.27.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.27.50-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.27.90-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.27.90-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.27.90-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.1-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.28.4-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-52720",
"aliases": [
"DEBIAN-CVE-2026-52720"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.0-4+deb12u8"
}
]
}
],
"package": {
"name": "gst-plugins-bad1.0",
"purl": "pkg:deb/debian/gst-plugins-bad1.0?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.22.0-4",
"1.22.0-4+deb12u1",
"1.22.0-4+deb12u2",
"1.22.0-4+deb12u3",
"1.22.0-4+deb12u4",
"1.22.0-4+deb12u5",
"1.22.0-4+deb12u6",
"1.22.0-4+deb12u7"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-52720.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.26.2-3+deb13u3"
}
]
}
],
"package": {
"name": "gst-plugins-bad1.0",
"purl": "pkg:deb/debian/gst-plugins-bad1.0?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.26.2-3",
"1.26.2-3+deb13u1",
"1.26.2-3+deb13u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-52720.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
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}
]
}
],
"package": {
"name": "gst-plugins-bad1.0",
"purl": "pkg:deb/debian/gst-plugins-bad1.0?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.26.10-1",
"1.26.10-2",
"1.26.2-3",
"1.26.3-1",
"1.26.4-1",
"1.26.5-1",
"1.26.5-2",
"1.26.6-1",
"1.26.6-2",
"1.26.6-3",
"1.26.6-4",
"1.26.6-5",
"1.26.7-1",
"1.26.7-2",
"1.26.8-1",
"1.26.9-1",
"1.27.1-1",
"1.27.2-1",
"1.27.50-1",
"1.27.90-1",
"1.27.90-2",
"1.27.90-3",
"1.28.0-1",
"1.28.1-1",
"1.28.1-2",
"1.28.1-3",
"1.28.2-1",
"1.28.2-2",
"1.28.3-1",
"1.28.4-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-52720.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-16T11:00:06.131832481Z",
"provider": "osv",
"upstream": [
"CVE-2026-52720"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-52720"
]
},
"related_cves": [
{
"value": "CVE-2026-52720",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 340608,
"published_at": "2026-06-15T20:16:32.58+00:00"
}