KEV Entry

CVE-2021-40438

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-40438

2021-12-01 01:00 CET

Timestamps

2021-12-01

2021-12-01

Scope

mod_proxy SSRF | Affected: Apache / Apache HTTP Server | CVSS: 9.0 (CRITICAL) | EPSS: 0.99999 | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-40438', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-40438'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-40438'}

4f94b250-d518-4dc5-90d7-e34e019ac801

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 successful_exploitation 0.70
View details 
{
  "added_date": "2021-12-01T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2021-40438",
  "cvss_estimated": false,
  "cvss_score": 9.0,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.99997,
  "epss_score": 0.99999,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "Apache HTTP Server",
  "title": "mod_proxy SSRF",
  "used_in_malware": "unknown",
  "vendor": "Apache",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-40438"
}
 -
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