VULNERABILITY INTELLIGENCE

CVE-2021-43000

CVSS score8.8 HIGH

EPSS probability0.48%

CISA KEVNot currently listed

Published2021-12-07

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Description

Amzetta zPortal Windows zClient is affected by Buffer Overflow. IOCTL Handler 0x22001B in the Amzetta zPortal Windows zClient <= v3.2.8180.148 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.

Weakness classification

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Primary references

cve@mitre.org — Exploit, Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Technical Description, Third Party Advisory