CVE-2021-27860

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-01-10), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 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
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 40%CVSS: 9.8Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

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

A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p92 and 10.2.2r44p1 allows a remote, unauthenticated attacker to upload a file to any location on the filesystem. The FatPipe advisory identifier for this vulnerability is FPSA006.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: 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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
40%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

December 8, 2021

Last Modified

October 24, 2025

Advisory Details (3)

Auto-updated Sep 3, 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-2021-27860
generic
https://www.ic3.gov/Media/News/2021/211117-2.pdf
generic

Support

https://www.fatpipeinc.com/support/cve-list.php

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 58× in last 7d / 255× 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 824 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2021-27860?
CVE-2021-27860 is a critical vulnerability published on December 8, 2021. A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p92 and 10.2.2r44p1 allows a remote, unauthenticated attacker to upload a file to any location on the filesystem. The FatPipe advisory identifier for this vulnerability is FPSA006.
When was CVE-2021-27860 disclosed?
CVE-2021-27860 was first published in the National Vulnerability Database on December 8, 2021, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-27860 actively exploited?
Yes. CISA added CVE-2021-27860 to the Known Exploited Vulnerabilities catalog on January 10, 2022, affecting FatPipe WARP, IPVPN, and MPVPN software. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-27860?
CVE-2021-27860 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2021-27860?
CVE-2021-27860 affects FatPipe WARP, IPVPN, and MPVPN software. 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-2021-27860?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-27860, 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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