Is It On KEV?

Kaseya Virtual System/Server Administrator (VSA)

YES - ON THE CISA KEV LIST
CVE-2021-30116

Kaseya Virtual System/Server Administrator (VSA) Information Disclosure Vulnerability

CISA catalog due date2021-11-17
overdue since 2021-11-17
EPSS exploit probability (next 30 days)85.7% · 100percentile
From CVE publication to KEV listing117 days (2021-07-09 → 2021-11-03)
Remediation window (KEV listing to due date)14 days
Days on the KEV list1834 days
Date added to KEV2021-11-03
Known ransomware campaign useKnown
VendorKaseya
ProductVirtual System/Server Administrator (VSA)
Weaknesses (CWE)CWE-522

Kaseya: 3 entries (0.2% of all KEV entries are from this vendor); 0 added in 2026.

BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.

Your BOD 26-04 window (SSVC tier helper)

Your remediation window ends:

Description

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.

Required action (CISA)

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-30116

References

Other KEV entries for this vendor: Kaseya

Kaseya - Vendors with KEV entries

Go deeper

KEV deadlines are a governance problem as much as a patching one. TrebSec's AI governance packs help small teams document, assign, and evidence exactly this work.

AI Governance Policy Pack - $79 AI Vendor Workbook - $49 Both packs bundled - $99

Daily threat briefs at trebsec.com

Check another CVE