Read the docs
TI-2021-10670 Aliases CVE-2021-30121GHSA-v66q-p7rm-w9w6

(Semi-)Authenticated local file inclusion in Kaseya VSA < v9.5.6

Priority LOW 37CWE-829Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-829.

Summary

Semi-authenticated local file inclusion The contents of arbitrary files can be returned by the webserver Example request: `https://x.x.x.x/KLC/js/Kaseya.SB.JS/js.aspx?path=C:\Kaseya\WebPages\dl.asp` A valid sessionId is required but can be easily obtained via CVE-2021-30118

Why it matters now

EPSS 0.04962 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kaseya:vsa:*:*:*:*:-:*:*:*before 9.5.6VulnerableKaseya
  • cpe:2.3:a:kaseya:vsa:*:*:*:*:-:*:*:* Versions before 9.5.6 Vulnerable ·Kaseya

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30121
  2. 2026-10-03 Alias added: GHSA-v66q-p7rm-w9w6

References

Exploit 1

Patch 2

  • TI-2021-10669 2FA bypass in Kaseya VSA <= v9.5.6 CVSS 3.1CRITICAL 9.9
  • TI-2021-10668 Authenticated Authenticated reflective XSS in Kaseya VSA <= v9.5.6 CVSS 3.1MEDIUM 5.4
  • TI-2021-10666 Authenticated SQL injection in Kaseya VSA < v9.5.6 CVSS 3.1CRITICAL 9.8
  • TI-2021-10667 Unauthenticated Remote Code Execution in Kaseya VSA < v9.5.5 CVSS 3.1CRITICAL 9.8
  • TI-2021-10736 Unauthenticated XML External Entity vulnerability in Kaseya VSA < v9.5.6 CVSS 3.1HIGH 7.5
  • TI-2019-10812 An issue was discovered in Kaseya VSA RMM through 9.5.0.22. CVSS 3.1MEDIUM 6.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences