KEV Entry

CVE-2025-6543

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2025-6543

2026-06-01 12:36 CEST

Timestamps

2026-06-01

2026-06-01

Scope

Memory overflow vulnerability leading to unintended control flow and Denial of Service | Affected: NetScaler / ADC, Gateway | CVSS: 9.2 (CRITICAL) | EPSS: 0.10562 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2025-6543', 'url': 'https://www.cve.org/CVERecord?id=CVE-2025-6543'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2025-6543'}

504b8f8e-a56a-4088-a79d-1ead815ce0a3

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": "2026-06-01T10:36:14.774Z",
  "ahead_of_cisa_kev": {
    "count": 1,
    "unit": "day"
  },
  "cve_id": "CVE-2025-6543",
  "cvss_estimated": false,
  "cvss_score": 9.2,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.95648,
  "epss_score": 0.10562,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "ADC, Gateway",
  "title": "Memory overflow vulnerability leading to unintended control flow and Denial of Service",
  "used_in_malware": "unknown",
  "vendor": "NetScaler",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2025-6543"
}
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