Citrix · NetScaler
CVE-2026-88771
A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands
Cos'è
Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.
This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to an unauthenticated attacker to execute arbitrary commands.
CISA: Citrix NetScaler ADC and NetScaler Gateway contain an improper input validation vulnerability that could allow an unauthenticated attacker to execute arbitrary commands.
Cosa fare
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.
Scadenza per le agenzie federali USA: 30 settembre 2026
Altre falle sfruttate di Citrix
| Aggiunto | Vulnerabilità | Prodotto | Gravità | Probabilità di attacco |
|---|---|---|---|---|
| 4 ott 2026 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler | Alta 8,7 | 11% |
| 27 set 2026 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler | Critica 9,5 | 78% |
| 9 set 2026 | Authentication Bypass Using an Alternate Path or Channel | NetScaler | Critica 9,3 | 33% |
| 30 mar 2026 | Out-of-Bounds Read | NetScaler | Critica 9,3 | 91% |
| 26 ago 2025 | Memory Overflow | NetScaler | Critica 9,2 | 21% |
| 26 ago 2026 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler ADC and NetScaler Gateway | Alta 8,8 | 1,0% |
| 25 ago 2025 | Improper Privilege Management | Session Recording | Media 5,1 | 3,5% |
| 25 ago 2025 | Deserialization of Untrusted Data | Session Recording | Media 5,1 | 21% |
Fonti: Known Exploited Vulnerabilities (CISA, pubblico dominio), CVE records (cve.org) e EPSS (FIRST). La probabilità di attacco è la stima EPSS che qualcuno provi a sfruttare la falla nei prossimi 30 giorni.