Critical severity · published Aug 26, 2025
CVE-2025-7776
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as a Gateway…
9.8
CVSS
9.1%
EPSS
No
On KEV
Description
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) with PCoIP Profile bounded to it
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)9.1% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NA
NetScaler ADC · Citrix
12.1 before 12.1-55.330; 12.1 before 12.1-55.330; 13.1 before 13.1-37.241; 13.1 before 13.1-37.241; 13.1 before 13.1-59.22; 14.1 before 14.1-47.48 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-7776
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-7776
Vendor Advisory
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938
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