Vulnerability Intelligence Report
CVE-2021-40399
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.
No Active Exploit Signals
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:1.25%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗CWE-416: Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| WPS | WPS Office | 11.2.0.10351 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.246%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Talos · Researcher · USA |
| Reserved | 2021-09-01T00:00:00 |
| Published | 2022-05-12T17:01:24 |
| Patch Date | 2022-05-09 |
| Last Updated | 2025-04-15T19:04:10 |
Community Chatter & Buzz