CVE-2021-37415

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 2021-12-01), 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 — 3 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 100%CVSS: 9.8Exploit: NoneExposed: 0

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

Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.

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
100.0%
KEV
⚠ Exploited

Published

September 1, 2021

Last Modified

October 31, 2025

Advisory Details (3)

Auto-updated Jun 1, 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-2021-37415
generic

ServiceDesk Plus On-Premises release notes: ReadMe & updates

https://www.manageengine.com/products/service-desk/on-premises/readme.html#11302
generic

ManageEngine: ITOps, cybersecurity & service management software

https://www.manageengine.com

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 35× in last 7d / 199× 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 382 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2021/CVE-2021-37415.yaml
    First seen Jan 1, 2021

    Zoho ManageEngine ServiceDesk Plus - Authentication Bypass

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2021-37415?
CVE-2021-37415 is a critical vulnerability published on September 1, 2021. Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.
When was CVE-2021-37415 disclosed?
CVE-2021-37415 was first published in the National Vulnerability Database on September 1, 2021, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-37415 actively exploited?
Yes. CISA added CVE-2021-37415 to the Known Exploited Vulnerabilities catalog on December 1, 2021, affecting Zoho ManageEngine ServiceDesk Plus (SDP). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-37415?
CVE-2021-37415 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2021-37415?
CVE-2021-37415 affects Zoho ManageEngine ServiceDesk Plus (SDP). 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-2021-37415?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-37415, 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

Explore the affected products and dependency analysis for CVE-2021-37415

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