How severe is CVE-2020-25291?

CVE-2020-25291 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25291?

CVE-2020-25291 affects Kingsoft Wps Office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25291?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-25291 published?

CVE-2020-25291 was published on 2020-09-13 and last updated on 2026-06-17.

CVE-2020-25291

CVE-2020-25291 is a high-severity vulnerability in Kingsoft Wps Office with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Kingsoft Wps Office
Published: 2020-09-13
Last modified: 2026-06-17

Description

GdiDrawHoriLineIAlt in Kingsoft WPS Office before 11.2.0.9403 allows remote heap corruption via a crafted PLTE chunk in PNG data within a Word document. This is related to QBrush::setMatrix in gui/painting/qbrush.cpp in Qt 4.x.

Frequently asked questions

What is CVE-2020-25291?: GdiDrawHoriLineIAlt in Kingsoft WPS Office before 11.2.0.9403 allows remote heap corruption via a crafted PLTE chunk in PNG data within a Word document. This is related to QBrush::setMatrix in gui/painting/qbrush.cpp in Qt 4.x.
How severe is CVE-2020-25291?: CVE-2020-25291 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25291?: CVE-2020-25291 affects Kingsoft Wps Office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-25291 published?: CVE-2020-25291 was published on 2020-09-13 and last updated on 2026-06-17.

References

http://zeifan.my/security/rce/heap/2020/09/03/wps-rce-heap.html

Affected products (1)

cpe:2.3:a:kingsoft:wps_office:*:*:*:*:*:*:*:*

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