CVE-2021-43899 is a critical Remote Code Execution (RCE) vulnerability affecting the Microsoft 4K Wireless Display Adapter and its firmware. With a CVSS score of 9.8, it allows unauthenticated attackers to execute arbitrary code remotely over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, media coverage indicates it was part of a Patch Tuesday that addressed actively exploited zero-days, and community discussion suggests notable attention, despite no public exploit code being available in Metasploit, Nuclei, or ExploitDB.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.9520.47CPE matchmatch criteria | cpe:2.3:o:microsoft:wireless_display_adapter_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.