Citrix · NetScaler
CVE-2026-88779
Memory overflow vulnerability leading to Denial of Service
O que é
Vulnerability in NetScaler ADC and NetScaler Gateway.
This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.
CISA: Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for a denial of service.
O que fazer
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.
Prazo para as agências federais dos EUA: 7 de outubro de 2026
- Adicionada à lista da CISA
- 4 de outubro de 2026
- Publicada
- 4 de outubro de 2026
- Gravidade
- Alto 8,7 CVSS 4.0
- Chance de ataques nos próximos 30 dias (EPSS)
- 11% entre os 4,0% mais altos de todas as vulnerabilidades conhecidas
- Fraqueza
- CWE-119
- Mais detalhes
- NVD · CVE.org · CISA
Todas as referências (1)
Mais falhas exploradas de Citrix
| Adicionado | Vulnerabilidade | Produto | Gravidade | Chance de ataque |
|---|---|---|---|---|
| 27 de set. de 2026 | Improper Input Validation | NetScaler | Crítica 9,5 | 82% |
| 27 de set. de 2026 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler | Crítica 9,5 | 78% |
| 9 de set. de 2026 | Authentication Bypass Using an Alternate Path or Channel | NetScaler | Crítica 9,3 | 33% |
| 30 de mar. de 2026 | Out-of-Bounds Read | NetScaler | Crítica 9,3 | 91% |
| 26 de ago. de 2025 | Memory Overflow | NetScaler | Crítica 9,2 | 21% |
| 26 de ago. de 2026 | Improper Restriction of Operations within the Bounds of a Memory Buffer | NetScaler ADC and NetScaler Gateway | Alto 8,8 | 1,0% |
| 25 de ago. de 2025 | Improper Privilege Management | Session Recording | Média 5,1 | 3,5% |
| 25 de ago. de 2025 | Deserialization of Untrusted Data | Session Recording | Média 5,1 | 21% |
Fontes: Known Exploited Vulnerabilities (CISA, domínio público), CVE records (cve.org) e EPSS (FIRST). A chance de ataque é a estimativa EPSS de que alguém tente explorar a falha nos próximos 30 dias.