CVE-2021-30120

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Exploited in the wild
7.5EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (ssvc active)
CISA-KEV: Not listedEPSS PROB: 6%CVSS: 7.5Exploit: ssvc activeExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Kaseya VSA before 9.5.7 allows attackers to bypass the 2FA requirement. The need to use 2FA for authentication in enforce client-side instead of server-side and can be bypassed using a local proxy. Thus rendering 2FA useless. Detailed description --- During the login process, after the user authenticates with username and password, the server sends a response to the client with the booleans MFARequired and MFAEnroled. If the attacker has obtained a password of a user and used an intercepting proxy (e.g. Burp Suite) to change the value of MFARequered from True to False, there is no prompt for the second factor, but the user is still logged in.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
85(Act)
EG Risk 85/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation90% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
6%
EPSS %ILE
92%
KEV
Not listed

Published

July 9, 2021

Last Modified

August 14, 2026

Advisory Details (1)

Auto-updated Aug 14, 2026
No patch confirmed yet.
generic

Kaseya VSA Limited Disclosure | DIVD CSIRT

https://csirt.divd.nl/2021/07/07/Kaseya-Limited-Disclosure/

Vendor Advisories for CVE-2021-30120(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 35× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 137 total refreshes for this CVE.

  1. 2026-08-25 13:45 UTCEPSS rescore
  2. 2026-08-24 14:12 UTCEPSS rescore
  3. 2026-08-23 00:16 UTCEPSS rescore
  4. 2026-08-21 23:46 UTCEPSS rescore
  5. 2026-08-20 22:52 UTCEPSS rescore
  6. 2026-08-19 17:01 UTCEPSS rescore
  7. 2026-08-18 13:45 UTCEPSS rescore
  8. 2026-08-17 13:44 UTCEPSS rescore
  9. 2026-08-16 14:53 UTCEPSS rescore
  10. 2026-08-16 02:11 UTCEPSS rescore
  11. 2026-08-16 02:11 UTCEPSS rescore
  12. 2026-08-15 01:27 UTCEPSS rescore
  13. 2026-08-14 05:25 UTCEG score recompute▼ 2.40
  14. 2026-08-14 05:25 UTCGHSA enrichment
  15. 2026-08-14 05:24 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  16. 2026-08-14 04:24 UTCEG score recompute
  17. 2026-08-14 04:24 UTCGHSA enrichment
  18. 2026-08-13 21:57 UTCEPSS rescore
  19. 2026-08-12 13:47 UTCEPSS rescore
  20. 2026-08-11 13:38 UTCEPSS rescore
  21. 2026-08-09 13:43 UTCEPSS rescore
  22. 2026-08-08 16:33 UTCEPSS rescore
  23. 2026-08-07 16:23 UTCEPSS rescore
  24. 2026-08-06 13:43 UTCEPSS rescore
  25. 2026-08-05 19:14 UTCEPSS rescore
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  1. 2026-08-04 15:06 UTCEPSS rescore
  2. 2026-08-04 10:34 UTCEPSS rescore
  3. 2026-08-03 10:33 UTCEPSS rescore
  4. 2026-08-02 02:24 UTCEPSS rescore
  5. 2026-08-01 04:13 UTCEPSS rescore
  6. 2026-07-30 16:25 UTCEPSS rescore
  7. 2026-07-30 16:25 UTCEPSS rescore
  8. 2026-07-30 01:28 UTCEPSS rescore
  9. 2026-07-30 01:27 UTCEPSS rescore
  10. 2026-07-28 15:33 UTCEPSS rescore
  11. 2026-07-25 14:15 UTCEPSS rescore
  12. 2026-07-24 14:15 UTCEPSS rescore
  13. 2026-07-23 14:16 UTCEPSS rescore
  14. 2026-07-23 02:00 UTCEG score recompute
  15. 2026-07-22 22:47 UTCEG score recompute▲ 2.40
  16. 2026-07-22 14:06 UTCEPSS rescore
  17. 2026-07-22 14:06 UTCEPSS rescore
  18. 2026-07-21 15:22 UTCEPSS rescore
  19. 2026-07-21 15:22 UTCEPSS rescore
  20. 2026-07-20 17:05 UTCEPSS rescore
  21. 2026-07-19 14:28 UTCEPSS rescore
  22. 2026-07-19 02:27 UTCEPSS rescore
  23. 2026-07-19 02:27 UTCEPSS rescore
  24. 2026-07-18 10:02 UTCEPSS rescore
  25. 2026-07-18 10:02 UTCEPSS rescore
  26. 2026-07-16 17:00 UTCEPSS rescore
  27. 2026-07-15 16:55 UTCEPSS rescore
  28. 2026-07-15 16:55 UTCEPSS rescore
  29. 2026-07-15 01:58 UTCEPSS rescore
  30. 2026-07-13 22:27 UTCEPSS rescore
  31. 2026-07-13 22:27 UTCEPSS rescore
  32. 2026-07-13 06:10 UTCEPSS rescore
  33. 2026-07-12 05:44 UTCEPSS rescore
  34. 2026-07-12 05:44 UTCEPSS rescore
  35. 2026-07-11 08:25 UTCEPSS rescore
  36. 2026-07-11 08:25 UTCEPSS rescore
  37. 2026-07-09 19:07 UTCEPSS rescore
  38. 2026-07-08 15:12 UTCEPSS rescore
  39. 2026-07-07 13:43 UTCEPSS rescore
  40. 2026-07-06 16:25 UTCEPSS rescore
  41. 2026-07-06 16:25 UTCEPSS rescore
  42. 2026-07-06 02:21 UTCEPSS rescore
  43. 2026-07-06 02:21 UTCEPSS rescore
  44. 2026-07-05 02:28 UTCEPSS rescore
  45. 2026-07-04 06:29 UTCEPSS rescore
  46. 2026-07-04 06:29 UTCEPSS rescore
  47. 2026-07-02 16:57 UTCEPSS rescore
  48. 2026-07-01 15:03 UTCEPSS rescore
  49. 2026-06-30 23:20 UTCEPSS rescore
  50. 2026-06-30 23:20 UTCEPSS rescore
  51. 2026-06-29 14:04 UTCEPSS rescore
  52. 2026-06-28 04:54 UTCEPSS rescore
  53. 2026-06-28 04:54 UTCEPSS rescore
  54. 2026-06-27 03:06 UTCEPSS rescore
  55. 2026-06-27 03:06 UTCEPSS rescore
  56. 2026-06-25 13:48 UTCEPSS rescore
  57. 2026-06-25 13:48 UTCEPSS rescore
  58. 2026-06-24 14:03 UTCEPSS rescore
  59. 2026-06-24 14:03 UTCEPSS rescore
  60. 2026-06-23 21:31 UTCEPSS rescore
  61. 2026-06-23 21:31 UTCEPSS rescore
  62. 2026-06-22 14:24 UTCEPSS rescore
  63. 2026-06-22 14:24 UTCEPSS rescore
  64. 2026-06-21 14:55 UTCEPSS rescore
  65. 2026-06-21 14:54 UTCEPSS rescore
  66. 2026-06-21 01:58 UTCEPSS rescore
  67. 2026-06-21 01:58 UTCEPSS rescore
  68. 2026-06-19 19:24 UTCEPSS rescore
  69. 2026-06-19 19:24 UTCEPSS rescore
  70. 2026-06-18 17:51 UTCEPSS rescore
  71. 2026-06-18 17:51 UTCEPSS rescore
  72. 2026-06-17 17:51 UTCEPSS rescore
  73. 2026-06-16 17:51 UTCEPSS rescore
  74. 2026-06-15 17:46 UTCEPSS rescore
  75. 2026-06-14 23:15 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2021-30120?
CVE-2021-30120 is a high vulnerability published on July 9, 2021. Kaseya VSA before 9.5.7 allows attackers to bypass the 2FA requirement. The need to use 2FA for authentication in enforce client-side instead of server-side and can be bypassed using a local proxy. Thus rendering 2FA useless. Detailed description --- During the login process, after the user…
When was CVE-2021-30120 disclosed?
CVE-2021-30120 was first published in the National Vulnerability Database on July 9, 2021, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-30120 actively exploited?
CVE-2021-30120 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.6% of all scored CVEs.
What is the CVSS score of CVE-2021-30120?
CVE-2021-30120 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2021-30120?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-30120, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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