CVE-2018-7225
libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · February 18, 2018
Updated · November 22, 2025
Description
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
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 · 5.4CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
CWE-805 · Buffer Access with Incorrect Length Value