CVE-2021-30116

criticalknown exploitedpublic exploitcovered by 1 sourcefirst seen 2021-11-03

Actively exploited. CVE-2021-30116 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Public exploit code is available. Proof-of-concept or working exploit code for CVE-2021-30116 is indexed in Nuclei. Expect opportunistic scanning and exploitation attempts — prioritize remediation.

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.

CSIRTS triage

What: Kaseya VSA contains an information disclosure vulnerability allowing an attacker to obtain the sessionId for further attacks.
Who is affected: Deployments of Kaseya VSA are affected.
Urgency: Remediation is urgent due to active exploitation and critical severity.
Action: Update to the latest version of Kaseya VSA.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.

Exploit availability

Public exploit or proof-of-concept code for CVE-2021-30116 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.

NucleiA nuclei-templates detection/PoC template exists for this CVE.look it up ↗

Advisory coverage (1)

criticalexploitedCVE-2021-30116: Kaseya Virtual System/Server Administrator (VSA) Information Disclosure Vulnerabilitycisa-kev · 2021-11-03

External references

NVD record for CVE-2021-30116

CVE.org record

CISA KEV catalog

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