Citrix · NetScaler
CVE-2025-7775
Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service
概要
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
CISA: Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service.
対処法
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
米国連邦機関の対応期限：2025年8月28日
Citrixのその他の悪用された脆弱性
| 追加日 | 脆弱性 | 製品 | 深刻度 | 攻撃の可能性 |
|---|---|---|---|---|
| 2026/10/04 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler | 高 8.7 | 11% |
| 2026/09/27 | Improper Input Validation | NetScaler | 緊急 9.5 | 82% |
| 2026/09/27 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler | 緊急 9.5 | 77% |
| 2026/09/09 | Authentication Bypass Using an Alternate Path or Channel | NetScaler | 緊急 9.3 | 33% |
| 2026/03/30 | Out-of-Bounds Read | NetScaler | 緊急 9.3 | 91% |
| 2026/08/26 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler ADC and NetScaler Gateway | 高 8.8 | 1.0% |
| 2025/08/25 | Improper Privilege Management | Session Recording | 中 5.1 | 3.5% |
| 2025/08/25 | Deserialization of Untrusted Data | Session Recording | 中 5.1 | 18% |
出典：Known Exploited Vulnerabilities（CISA、パブリックドメイン）、CVE records（cve.org）、EPSS（FIRST）。攻撃の可能性は、今後30日以内に誰かがその脆弱性の悪用を試みるというEPSSの推定値です。