CVE catalog
CVE-2026-52720
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
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.64% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | gst-plugins-bad1.0 | sid | 1.28.8-1 | fixed |
| Debian | gst-plugins-bad1.0 | forky | 1.28.8-1 | fixed |
| Debian | gst-plugins-bad1.0 | trixie | 1.26.2-3+deb13u3 | fixed |
| Debian | gst-plugins-bad1.0 | trixie-security | 1.26.2-3+deb13u3 | fixed |
| Debian | gst-plugins-bad1.0 | bookworm | 1.22.0-4+deb12u7 | vulnerable |
| Debian | gst-plugins-bad1.0 | bookworm-security | 1.22.0-4+deb12u8 | fixed |
| Cpe | gst-plugins-bad1.0 | Not reported | Not reported | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gst-plugins-bad1.0 | source | sid | 1.28.5-1 | not yet assigned | Not reported | Not reported |
| Debian | gst-plugins-bad1.0 | source | forky | 1.28.5-1 | not yet assigned | Not reported | Not reported |
| Debian | gst-plugins-bad1.0 | source | trixie | 1.26.2-3+deb13u3 | not yet assigned | Not reported | Not reported |
| Debian | gst-plugins-bad1.0 | source | bookworm | 1.22.0-4+deb12u8 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gir1.2-gst-plugins-bad-1.0]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
- [gstreamer1.0-opencv]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
- [gstreamer1.0-plugins-bad]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
- [gstreamer1.0-plugins-bad-apps]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
- [gstreamer1.0-wpe]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
- [libgstreamer-opencv1.0-0]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
- [libgstreamer-plugins-bad1.0-0]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
- [libgstreamer-plugins-bad1.0-dev]Affected
Source package: [gst-plugins-bad1.0]
Details (4)
1.22.0-4+deb12u7· amd64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookwormAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· amd64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
1.22.0-4+deb12u7· arm64 · bookworm-securityAffected · Fixed:
1.22.0-4+deb12u8nvd · gst-plugins-bad1.0 · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2026_36749.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-52720]
- [https://security-tracker.debian.org/tracker/CVE-2026-52720]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52720.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1919.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]