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Vulnerability details

CVE-2025-7775

Actively exploited
NetScaler ADCNetScaler Gateway

Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service

CVSS 4.0
9.2Critical

Remedy

Required action (CISA): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due: 2025-08-28)

Versions not listed as affected in the CVE record:
  • ADC — version 47.48 and later
  • ADC — version 59.22 and later
  • ADC — version 37.241 and later
  • ADC — version 55.330 and later
  • Gateway — version 47.48 and later
  • Gateway — version 59.22 and later

Official description

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

CVSS scores

ScoreVersionSourceVector
9.2Critical 4.0 CVEProject cvelistV5 (CNA) (Citrix) CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Affected products

VendorProductVersionsSource
NetScaler ADC 12.1 FIPS and NDcPP ≤ v < 55.330 CVEProject cvelistV5 (CNA)
NetScaler ADC 13.1 ≤ v < 59.22 CVEProject cvelistV5 (CNA)
NetScaler ADC 13.1 FIPS and NDcPP ≤ v < 37.241 CVEProject cvelistV5 (CNA)
NetScaler ADC 14.1 ≤ v < 47.48 CVEProject cvelistV5 (CNA)
NetScaler Gateway 12.1 FIPS and NDcPP ≤ v < 55.330 CVEProject cvelistV5 (CNA)
NetScaler Gateway 13.1 ≤ v < 59.22 CVEProject cvelistV5 (CNA)
NetScaler Gateway 13.1 FIPS and NDcPP ≤ v < 37.241 CVEProject cvelistV5 (CNA)
NetScaler Gateway 14.1 ≤ v < 47.48 CVEProject cvelistV5 (CNA)

References and advisories

2
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Details

Published
2025-08-26
Last updated
2026-02-26
State
Published
Assigner (CNA)
Citrix
Kolun priority
78 · High

CISA KEV catalog

Date added
2025-08-26
Due date
2025-08-28
Used in ransomware
Unknown

Exploit prediction (EPSS)

20.67%
Probability of exploitation in 30 days
97.5%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
Active
Technical impact
Total

Weaknesses (CWE)

  • CWE-119
    Improper Restriction of Operations within the Bounds of a Memory Buffer