---
id: CVE-2026-109833
title: >-
  A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise
  Linux
summary: >-
  A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise
  Linux. In the VNC TLS read path, partial consumption of the internal peek
  buffer incorrectly moves remaining peeked bytes into the caller-supplied
  buffer instead o…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-121
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T14:17:31.510'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109833'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-109833'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2550367'
    label: secalert@redhat.com
tags:
  - nvd
ingestedAt: '2026-10-13T13:27:04.020Z'
---

## Overview

A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.