STRIKE June 30, 2025 Reading Time: 1 minutes

Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability (CVE-2025-6543) Added to CISA KEV

by STRIKE Threat Intelligence by SecurityScorecard

SecurityScorecard June 30 Advisory

CVE-2025-6543 is a critical vulnerability affecting Citrix Netscaler Application Delivery Controller with a CVSS score of 9.2.

On June 30, 2025, this vulnerability was added to CISA’s list of Known Exploited Vulnerabilities (CISA-KEV).

Severity: Critical
Impact: Severe impact, high likelihood of exploitation
Action: Immediate action required – apply patches, restrict access, implement emergency security measures.

At the time of this writing, SecurityScorecard’s Attack Surface Intelligence has found 20784 IPs that are potentially vulnerable to this CVE.

More details available at:

CISA Known Exploited Vulnerabilities Catalog: CISA KEV

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