CVE-2021-43000 is a buffer overflow vulnerability affecting Amzetta zPortal Windows zClient versions up to and including 3.2.8180.148. This flaw allows a local attacker to execute arbitrary code in kernel mode or cause a denial of service through memory corruption and OS crash by sending specially crafted I/O Request Packets to IOCTL Handler 0x22001B. With a CVSS score of 8.8 (High), it presents a significant risk, requiring local access but having a low attack complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or widespread community discussion, though it has received limited media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.2.8180.148CPE matchmatch criteria | cpe:2.3:a:amzetta:zportal_windows_zclient:*:*:*:*:*:*:*:* |
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.