CVE-2026-52720
HIGH EPSS 38.0%
Published Jun 15, 20262w ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
Published Jun 15, 2026 2w ago
Last Modified Jun 17, 2026 1w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
38.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-122
References 3
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-52720
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2486731
- gitlab.freedesktop.org https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5105
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.