Multiple vulnerabilities in NetScaler ADC and NetScaler Gateway
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2025-5777 CVE-2025-5349 |
| CWE-ID | CWE-125 CWE-284 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Citrix Netscaler ADC Client/Desktop applications / Software for system administration Citrix NetScaler Gateway Server applications / Application servers |
| Vendor | Citrix |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU111237
Risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-5777
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds read error and read contents of memory on the system.
Successful exploitation of the vulnerability requires that NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCitrix Netscaler ADC: 12.0 - 14.1-43.50
Citrix NetScaler Gateway: 13.0-36.27 - 14.1-43.50
CPE2.3- cpe:2.3:a:citrix:citrix_netscaler_adc:12.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_adc:12.0:41.16:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_adc:12.0:41.22:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:13.0-36.27:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:13.0-41.20:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:13.0-41.28:*:*:*:*:*:*:*
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper access control
EUVDB-ID: #VU111236
Risk: High
CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-5349
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in NetScaler Management Interface. A remote non-authenticated attacker with access to NSIP, Cluster Management IP or local GSLB Site IP can bypass implemented security restrictions and gain unauthorized access to the application.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCitrix Netscaler ADC: 12.0 - 14.1-43.50
Citrix NetScaler Gateway: 13.0-36.27 - 14.1-43.50
CPE2.3- cpe:2.3:a:citrix:citrix_netscaler_adc:12.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_adc:12.0:41.16:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_adc:12.0:41.22:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:13.0-36.27:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:13.0-41.20:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:13.0-41.28:*:*:*:*:*:*:*
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
