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VULNERABILITIES

CVE-2026-52720 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: redhat-SADPCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:36749 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:36834 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:37130 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:47069 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:47070 redhat-SADP

see all 30 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-122Heap-based Buffer Overflowredhat-SADP
CWE-122Heap-based Buffer Overflow[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

19 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-52720
NVD Published Date:
Jun 15, 2026
NVD Last Modified:
Aug 3, 2026
Source:
[email protected]
CVE-2026-52720 Details - Not Deferred