Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since November 3, 2021.
CVE-2021-30116
Kaseya Virtual System/Server Administrator (VSA) Information Disclosure Vulnerability
Kaseya · Virtual System/Server Administrator (VSA)
Added to KEV November 3, 2021
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2021-30116
- CWE
- CWE-522
- Affected products
- Virtual System/Server Administrator (VSA) · Kaseya Virtual System/Server Administrator (VSA) · Kaseya
What happened
Kaseya Virtual System/Server Administrator (VSA) contains an information disclosure vulnerability allowing an attacker to obtain the sessionId that can be used to execute further attacks against the system.
What it means for your business
Kaseya Virtual System/Server Administrator (VSA) is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2021-30116). Kaseya Virtual System/Server Administrator (VSA) contains an information disclosure vulnerability allowing an attacker to obtain the sessionId that can be used to execute further attacks against the system. CISA remediation due date: 2021-11-17. If you need help checking exposure, call (864) 335-9223.
Required action
Apply updates per vendor instructions.
CISA due date: November 17, 2021
Sources
Related briefs
Microsoft PowerShell Security Feature Bypass vulnerability
Microsoft PowerShell Security Feature Bypass vulnerability (CVE-2026-70338) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Microsoft PowerBI Report Server Spoofing vulnerability
Microsoft PowerBI Report Server Spoofing vulnerability (CVE-2026-58647) was added to Microsoft’s security update guidance. Corrected the Power BI Report Server version in the Security Updates table to use the public release version instead of the internal build number. This is an informational change only. If you need help checking exposure, call (864) 335-9223.
Windows Print Spooler Information Disclosure vulnerability
Windows Print Spooler Information Disclosure vulnerability (CVE-2026-50383) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Windows Kernel Elevation of Privilege vulnerability
Windows Kernel Elevation of Privilege vulnerability (CVE-2026-49798) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Need help patching?
PremierePC monitors KEV alerts for managed clients and helps teams prioritize remediation before attackers do.