CVE-2010-5304

A NULL pointer dereference flaw was found in the way LibVNCServer before 0.9.9 handled certain...

7.5 High

A NULL pointer dereference flaw was found in the way LibVNCServer before 0.9.9 handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

3.12%Up 1.8 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2010-5304
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-476
Updated: 2026-11-02

CVE List No score

Record: CVE-2010-5304
Updated: 2026-11-02

EUVDEUVD-2010-5263 No score

Record: EUVD-2010-5263
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2wpx-v6qf-p32x 7.5

A NULL pointer dereference flaw was found in the way LibVNCServer before 0.9.9 handled certain...

Record: GHSA-2wpx-v6qf-p32x
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2010-5304 is a high vulnerability (CVSS 7.5) in Libvncserver Project Libvncserver, published February 5, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.12%, the 87th percentile. No source names a fixed version.