CVE-2025-6543 - Citrix NetScaler ADC and Gateway
AI Vulnerability ContextMemory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
Overview
A source-backed snapshot of this vulnerability.
CISA KEVyesWhether CISA lists this as exploited.
Techniques0AI attack methods connected to this vulnerability.
Case studies0Examples where this vulnerability is mentioned.
Vulnerability status
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CISA KEVCRITICAL
- CVE ID
- CVE-2025-6543
- Vendor/project
- Citrix
- Product
- NetScaler ADC and Gateway
- Vulnerability name
- Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability
- Date added
- 2025-06-30
- Due date
- 2025-07-21
- Known ransomware campaign use
- Unknown
- CVSS v3
- 9.8
- CVSS v4
- 9.2
CWE-119
Exploit context
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No description available. The source record only contains identifiers and metadata.
Source evidence
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Original source
Original source links
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NVD CVE pagehttps://nvd.nist.gov/vuln/detail/CVE-2025-6543CVE API docshttps://nvd.nist.gov/developers/vulnerabilitiesData feedshttps://nvd.nist.gov/vuln/data-feedsCataloghttps://www.cisa.gov/known-exploited-vulnerabilities-catalogData repositoryhttps://github.com/cisagov/kev-datasecure@citrix.comhttps://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6543