H3XAOperational intelligence
Live analytical pictureEvidence before assessment
Threat intelligence / Vulnerability

CVE-2025-6543

Citrix NetScaler ADC and Gateway contain a buffer overflow vulnerability leading to unintended control flow and Denial of Service. NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.

Vulnerability
TypeVulnerability
External ID—
First seen2025-06-30
Last seen2025-06-30

Confidence

—

Citrix NetScaler ADC and Gateway contain a buffer overflow vulnerability leading to unintended control flow and Denial of Service. NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.

Labels

exploitedkev

CISA KEV context

Vendor / productCitrix NetScaler ADC and Gateway
Added2025-06-30
Due date2025-07-21
13 recorded

Relationships

mitigates
from Remediate CVE-2025-6543
Mitigation
related-to
to Buffer Manipulation
Technique
related-to
to Buffer Overflow in an API Call
Technique
related-to
to Buffer Overflow in Local Command-Line Utilities
Technique
related-to
to Buffer Overflow via Environment Variables
Technique
related-to
to Buffer Overflow via Parameter Expansion
Technique
related-to
to Buffer Overflow via Symbolic Links
Technique
related-to
to Client-side Injection-induced Buffer Overflow
Technique
related-to
to Filter Failure through Buffer Overflow
Technique
related-to
to MIME Conversion
Technique
related-to
to Overflow Binary Resource File
Technique
related-to
to Overflow Buffers
Technique
related-to
to Overflow Variables and Tags
Technique
2 external

References

nvd
CVE-2025-6543
open
cwe
CWE-119
open
Continue into the dataIntelligence explorerHow to read the graphEvidence & provenance