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)
EPSS
96.1%
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 96× in last 7d / 421× 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 607 total refreshes for this CVE.

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