CVE-2025-7776

Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service

At a glance

Severity: HIGH 8.8
EPSS: EPSS 9.14 % · percentile 95 (2026-10-28)
State: PUBLISHED
Published: 2025-08-26
Updated: 2025-08-27
Assigner: Citrix
NVD status: Analyzed

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

Scores

Version	Score	Vector	Scored by
CVSS 4.0	HIGH 8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:L	Citrix
CVSS 4.0	HIGH 8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD · secure@citrix.com (Secondary)
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-119

European references

ENISA EUVD · EUVD-2025-25901
GCVE · GCVE-0-2025-7776

CERT-FR advisories

CERTFR-2025-AVI-0730 — Multiples vulnérabilités dans Citrix NetScaler ADC et NetScaler Gateway · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* ≥ 12.1 < 12.1-55.330
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* ≥ 12.1 < 12.1-55.330
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* ≥ 13.1 < 13.1-37.241
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* ≥ 13.1 < 13.1-37.241
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* ≥ 13.1 < 13.1-59.22
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* ≥ 14.1 < 14.1-47.48
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* ≥ 13.1 < 13.1-59.22
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* ≥ 14.1 < 14.1-47.48

Affected products

Product	Versions
NetScaler · ADC	affected 14.1 < 47.48 ; affected 13.1 < 59.22 ; affected 13.1 FIPS and NDcPP < 37.241 ; affected 12.1 FIPS and NDcPP < 55.330
NetScaler · Gateway	affected 14.1 < 47.48 ; affected 13.1 < 59.22 ; affected 13.1 FIPS and NDcPP < 37.241 ; affected 12.1 FIPS and NDcPP < 55.330

References

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD