CVE-2022-26143
Published: March 25, 2022
Official Description
A vulnerability has been identified in MiCollab and MiVoice Business Express that may allow a malicious actor to gain unauthorized access to sensitive information and services, cause performance degradations or a denial of service condition on the affected system.
CISA KEV Advisory
MiCollab, MiVoice Business Express Access Control Vulnerability
A vulnerability has been identified in MiCollab and MiVoice Business Express that may allow a malicious actor to gain unauthorized access to sensitive information and services, cause performance degradations or a denial of service condition on the affected system.
Apply updates per vendor instructions.
Risk Analysis
This vulnerability in MiCollab and MiVoice Business Express could allow a malicious actor to gain unauthorized access to sensitive information and services, or cause performance degradation and denial of service. The high EPSS score of 0.89199 indicates a very high likelihood of exploitation, and its presence in CISA's KEV confirms it has been actively exploited.
This vulnerability is actively being exploited in the wild. Attackers can remotely compromise affected systems.
Apply all available security patches and updates for MiCollab and MiVoice Business Express. Implement strong access controls and monitor systems for unusual activity.
Technical Analysis
CVE-2022-26143 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2022-26143 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-26143 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1