VULNERABILITY INTELLIGENCE
CVE-2026-52720
CVSS score8.8 HIGH
EPSS probability0.64%
CISA KEVNot currently listed
Published2026-06-15
Last modified2026-08-03
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
Weakness classification
- secalert@redhat.com: CWE-122
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-122