CVE-2018-7226

libvncserver: integer overflow in vcSetXCutTextProc in VNConsole.c

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Severity

Low

Red Hat Product Security

5.4

CVSS 3.0

Review impact separately from score.

Published · February 18, 2018

Updated · November 22, 2025

Description

An issue was discovered in vcSetXCutTextProc() in VNConsole.c in LinuxVNC and VNCommand from the LibVNC/vncterm distribution through 0.9.10. Missing sanitization of the client-specified message length may cause integer overflow or possibly have unspecified other impact via a specially crafted VNC packet.

Statement

This issue did not affect the versions of libvncserver as shipped with Red Hat Enterprise Linux 6 and 7.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.4
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CWE-190 · Integer Overflow or Wraparound