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Vulnerabilities

Vulnerability · CVE-2025-7775

Citrix NetScaler Memory Overflow Vulnerability

Published Aug 26, 2025 · catalog updated Jun 17, 2026 · Citrix NetScaler ADC and NetScaler Gateway

Patch now

CVE-2025-7775 is in the CISA known-exploited catalog, due Aug 28, 2025. Confirm Citrix NetScaler ADC and NetScaler Gateway against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
20.28%
Remediation
Remediation guidance
Affected products
cpe citrix/netscaler application delivery controller · cpe citrix/netscaler gateway · vendor Citrix NetScaler · vendor Citrix NetScaler ADC and NetScaler Gateway

Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with IPv6 services or servicegroups bound with IPv6 servers (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with DBS IPv6 services or servicegroups bound with IPv6 DBS servers (OR) CR virtual server with type HDX

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe citrix/netscaler application delivery controllerversion unspecified
  • cpe citrix/netscaler gatewayversion unspecified
  • vendor Citrix NetScalerversion unspecified
  • vendor Citrix NetScaler ADC and NetScaler Gatewayversion unspecified

How to fix CVE-2025-7775

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-7775 is in the CISA known-exploited catalog, due Aug 28, 2025. Confirm Citrix NetScaler ADC and NetScaler Gateway against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-119: Buffer Overflow. EPSS 20.28%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 26, 2025 · Catalog

    Detected

    Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with IPv6 services or serviceg

  2. Aug 26, 2025 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Aug 28, 2025 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 17, 2026 · Catalog

    Updated

    Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with IPv6 services or serviceg

Sources

  • CERT-FRGovernment advisoryCVE-2025-7775

    Le 26 août 2025, Citrix a publié un bulletin de sécurité (cf. section Documentation) concernant, entre autres, la vulnérabilité CVE-2025-7775. Celle-ci permet une exécution de code arbitraire à distance et affecte toutes les versions de Citrix NetScaler ADC et NetScaler Gateway,

    cert.ssi.gouv.fr
  • CISA KEVConfirmed exploitationCVE-2025-7775

    Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2025-7775

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-7775

    30-day exploitation probability 20.3%

    first.org
  • NIST NVDVulnerability recordCVE-2025-7775

    Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (OR) NetScaler ADC and NetScaler Gateway

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2025-7775

    Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.