KEV Entry

CVE-2025-53521

Known Exploited Vulnerability Entry Previdian

Back to Catalog View Vulnerability
Entry Details
Confirmed Exploited

CVE-2025-53521

2026-06-01 14:26 CEST

Timestamps

2026-06-01

2026-06-01

Scope

BigIP APM Vulnerability | Affected: F5 / BIG-IP | CVSS: 9.3 (CRITICAL) | EPSS: 0.02295 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2025-53521', 'url': 'https://www.cve.org/CVERecord?id=CVE-2025-53521'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2025-53521'}

ea6e32c2-e666-4e75-81fd-290e61ca9d7f

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

2026-10-02 09:09 CEST

2026-10-02 09:09 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2026-06-01T12:26:16.067Z",
  "ahead_of_cisa_kev": {
    "count": 1,
    "unit": "day"
  },
  "cve_id": "CVE-2025-53521",
  "cvss_estimated": false,
  "cvss_score": 9.3,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.82636,
  "epss_score": 0.02295,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "BIG-IP",
  "title": "BigIP APM Vulnerability",
  "used_in_malware": "unknown",
  "vendor": "F5",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2025-53521"
}
 -
Export Options
JSON Object JSON API View Full Catalog