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TI-2021-10668 Aliases CVE-2021-30119GHSA-f43v-wh9x-rgq6

Authenticated Authenticated reflective XSS in Kaseya VSA <= v9.5.6

Priority HIGH 84CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Authenticated reflective XSS in HelpDeskTab/rcResults.asp The parameter result of /HelpDeskTab/rcResults.asp is insecurely returned in the requested web page and can be used to perform a Cross Site Scripting attack Example request: `https://x.x.x.x/HelpDeskTab/rcResults.asp?result=<script>alert(document.cookie)</script>` The same is true for the parameter FileName of /done.asp Eaxmple request: `https://x.x.x.x/done.asp?FileName=";</script><script>alert(1);a="&PathData=&originalName=shell.aspx&FileSize=4388&TimeElapsed=00:00:00.078`

Why it matters now

Exploitation Active CISA SSVC · not in CISA KEV
EPSS 0.58759 99th 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

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

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 9.5.7VulnerableKaseya
  • cpe:2.3:a:kaseya:vsa:*:*:*:*:-:*:*:* Versions before 9.5.7 Vulnerable ·Kaseya

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30119
  2. 2026-10-03 Alias added: GHSA-f43v-wh9x-rgq6
  3. 2026-10-20 EPSS moved to the 99th percentile and above

References

Exploit 1

Patch 2

  • TI-2021-10669 2FA bypass in Kaseya VSA <= v9.5.6 CVSS 3.1CRITICAL 9.9
  • 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-2021-10670 (Semi-)Authenticated local file inclusion in Kaseya VSA < v9.5.6 CVSS 3.1MEDIUM 6.5
  • 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