CVE-2021-42990 is a buffer overflow vulnerability affecting FlexiHub for Windows versions above 2.0.4340 and below 5.3.14268. A local attacker can exploit this flaw by sending a specially crafted I/O Request Packet to IOCTL Handler 0x22001B, leading to arbitrary code execution in kernel mode or a denial of service. With a CVSS score of 8.8 (High), this vulnerability requires local access but has high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has garnered some community discussion and media coverage, including an article from BleepingComputer.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
> 2.0.4340, < 5.3.14268CPE matchmatch criteria | cpe:2.3:a:flexihub:flexihub:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.