KEV Entry

CVE-2021-40539

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-40539

2021-11-03 01:00 CET

Timestamps

2021-11-03

2021-11-03

Scope

Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution. | Affected: Zoho / ManageEngine ADSelfService Plus | CVSS: 9.8 (CRITICAL) | EPSS: 0.9896 | Used in malware: yes | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-40539', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-40539'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-40539'}

1162200e-cf62-409a-b6fd-33ad7ff76d74

Previdian
caeb2787-0d58-4236-9039-7c86c3e566f3

2026-10-02 09:10 CEST

2026-10-02 09:10 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian confirmed_compromise 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2021-40539",
  "cvss_estimated": false,
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.99929,
  "epss_score": 0.9896,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "ManageEngine ADSelfService Plus",
  "title": "Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.",
  "used_in_malware": "yes",
  "vendor": "Zoho",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-40539"
}
 -
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