CVE-2021-1699
MediumPublished
Windows (modem.sys) Information Disclosure Vulnerability
- Published
- Jan 12, 2021
- Updated
- Oct 8, 2024
- Assigning CNA
- microsoft
- Evidence observed
- Aug 5, 2026
Primary CVSS
5.5/ 10Medium
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.1%
Low · next 30 days
- Percentile
- 80.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Windows (modem.sys) Information Disclosure Vulnerability
Sources
1POC for CVE-2021-1699
Responsible use
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