CVE-2021-22900

HIGHNVD 7.29.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.2 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
7.2
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 14%CVSS: 7.2Exploit: NoneExposed: 0

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

A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

CVSS v3
7.2
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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. It is distinct from the 0–10 EG Score, which measures severity.

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
96.2%
KEV
⚠ Exploited

Published

May 27, 2021

Last Modified

December 18, 2025

Advisory Details (1)

Auto-updated Jun 11, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22900

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 62× in last 7d / 247× 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 452 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2021-22900?
CVE-2021-22900 is a high vulnerability published on May 27, 2021. A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.
When was CVE-2021-22900 disclosed?
CVE-2021-22900 was first published in the National Vulnerability Database on May 27, 2021, with the most recent update on December 18, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-22900 actively exploited?
Yes. CISA added CVE-2021-22900 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Ivanti Pulse Connect Secure. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-22900?
CVE-2021-22900 has a CVSS v3 base score of 7.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2021-22900?
CVE-2021-22900 affects Ivanti Pulse Connect Secure. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2021-22900?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-22900, 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.

Dependency Blast Radius

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