Citrix · NetScaler ADC and NetScaler Gateway
CVE-2026-8452
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service
这是什么
Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server
CISA: Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability which could lead to denial of service.
该怎么做
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
美国联邦机构的修复期限：2026年8月29日
Citrix 的其他被利用漏洞
| 加入日期 | 漏洞 | 产品 | 严重程度 | 受攻击概率 |
|---|---|---|---|---|
| 2024年1月17日 | Code Injection | NetScaler ADC and NetScaler Gateway | 中 5.5 | 3.2% |
| 2024年1月17日 | Buffer Overflow | NetScaler ADC and NetScaler Gateway | 高 8.2 | 58% |
| 2023年10月18日 | Buffer Overflow | NetScaler ADC and NetScaler Gateway | 严重 9.4 | >99.9% |
| 2023年7月19日 | Code Injection | NetScaler ADC and NetScaler Gateway | 严重 9.8 | 99.7% |
| 2026年10月4日 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler | 高 8.7 | 11% |
| 2026年9月27日 | Improper Input Validation | NetScaler | 严重 9.5 | 82% |
| 2026年9月27日 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler | 严重 9.5 | 78% |
| 2026年9月9日 | Authentication Bypass Using an Alternate Path or Channel | NetScaler | 严重 9.3 | 33% |
来源：Known Exploited Vulnerabilities（CISA，公有领域）、CVE records（cve.org）和 EPSS（FIRST）。受攻击概率是 EPSS 对未来 30 天内有人尝试利用该漏洞的估计。