CVE-2021-40399
mediumpriority · track · 31EPSS 0.014 · 72 %ileEUUSEPSS · scored 2026-10-28
An exploitable use-after-free vulnerability exists in WPS Spreadsheets ( ET ) as part of WPS Office, version 11.2.0.10351. A specially-crafted XLS file can cause a use-after-free condition, resulting in remote code execution. An attacker needs to provide a malformed file to the victim to trigger the vulnerability.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2021-40399/cnnvd
- https://security.wps.cn/notices/28cnnvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1412cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2022051209cnnvd
- https://www.wps.com/Patchcnnvd
- https://security.wps.cn/notices/28enisa_euvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1412enisa_euvd
- https://security.wps.cn/notices/28Third Party Advisorynvd
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