CVE-2018-6217 — The WStr::_alloc_iostr_data() function in kso.dll in Kingsoft WPS Office 10.1.0.7106 and 10.2.0.5978 allows remote attackers to cause a denial of service (application crash) via a crafted (a) web page, (b) office document, or (c) .rtf file

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MEDIUM

The WStr::_alloc_iostr_data() function in kso.dll in Kingsoft WPS Office 10.1.0.7106 and 10.2.0.5978 allows remote attackers to cause a denial of service (application crash) via a crafted (a) web page, (b) office document, or (c) .rtf file

Published Jan 25, 2018

5.5

MEDIUM

CVSS 3.0

EPSS 0.88%

Description

The WStr::_alloc_iostr_data() function in kso.dll in Kingsoft WPS Office 10.1.0.7106 and 10.2.0.5978 allows remote attackers to cause a denial of service (application crash) via a crafted (a) web page, (b) office document, or (c) .rtf file.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.88% 0.00877

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00877

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.88% (0.00877)	57.55th	v5 (v2026.06.15)
Sep 20, 2026	0.88% (0.00877)	57.48th	v5 (v2026.06.15)
Jul 20, 2024	0.18% (0.00177)	55.20th	v3 (v2023.03.01)
Jun 11, 2024	0.18% (0.00177)	54.81th	v3 (v2023.03.01)
Feb 10, 2024	0.15% (0.00152)	50.11th	v3 (v2023.03.01)
Jan 5, 2024	0.13% (0.00126)	47.08th	v3 (v2023.03.01)
Dec 5, 2023	0.11% (0.00107)	42.96th	v3 (v2023.03.01)
Mar 7, 2023	0.09% (0.00086)	34.89th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)
Feb 3, 2022	0.69% (0.00692)	18.96th	v5 (v2026.06.15)
Apr 14, 2021	0.69% (0.00692)	0.00th	v1

Weaknesses (1)

CWE-20

Improper Input Validation

References (1)

https://github.com/Khwarezmia/WPS_POC/tree/master/wps_20180122
x_refsource_MISCExploitThird Party Advisory

Link	Providers	Tags
https://github.com/Khwarezmia/WPS_POC/tree/master/wps_20180122		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jan 25, 2018

Updated Aug 5, 2024

Reserved Jan 25, 2018

Link CVE-2018-6217

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-6217

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-6217