CVE-2018-6390: WPS Office

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

The WStr::assign function in kso.dll in Kingsoft WPS Office 10.1.0.7106 and 10.2.0.5978 does not validate the size of the source memory block before an _copy call, which allows remote attackers to cause a denial of service (access violation and application crash) via a crafted (a) web page, (b) office document, or (c) .rtf file.

Affected products

• WPS WPS Office: version 10.1.0.7106 only; version 10.2.0.5978 only

Published 2018-01-29. Last modified 2026-06-17.