KEV Entry

CVE-2021-27104

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-27104

2021-11-03 01:00 CET

Timestamps

2021-11-03

2021-11-03

Scope

Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is... | Affected: Accellion / FTA | CVSS: 9.8 (CRITICAL) | EPSS: 0.56686 | Used in malware: yes | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-27104', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-27104'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-27104'}

c872f6d7-4dfd-4f4e-a3b8-a1a15c0bbc99

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-2021-27104",
  "cvss_estimated": false,
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.99037,
  "epss_score": 0.56686,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "FTA",
  "title": "Accellion FTA 9_12_370 and earlier is affected by OS command execution via a crafted POST request to various admin endpoints. The fixed version is...",
  "used_in_malware": "yes",
  "vendor": "Accellion",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-27104"
}
 -
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