CVE-2026-3055 is a critical memory overread vulnerability (CWE-125) affecting Citrix NetScaler ADC and NetScaler Gateway when configured as a SAML Identity Provider, caused by insufficient input validation. With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability over the network with low complexity. It is actively exploited in the wild, listed in CISA's KEV catalog, and has garnered significant community and media attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 13.1, < 13.1-37.262CPE matchmatch criteria | cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* | ||
>= 13.1, < 13.1-37.262CPE matchmatch criteria | cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* | ||
>= 13.1, < 13.1-62.23CPE matchmatch criteria | cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* | ||
>= 14.1, < 14.1-60.58CPE matchmatch criteria | cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* | ||
>= 13.1, < 13.1-62.23CPE matchmatch criteria | cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/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
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.