CVE-2026-88771
A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands
KEVCRITICAL 9.5EPSS 1.1%
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.
- Affected
- Citrix NetScaler · ADC · Gateway
- CVSS v4.0 CNA
- 9.5 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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 - CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.08% chance of exploitation in the next 30 days, 65th percentile
- CISA KEV
- added 2026-09-27
- Published
- 2026-09-27
- Updated
- 2026-09-29
Proof-of-concept exploits (5)
- watchtowrlabs/watchTowr-vs-Citrix-Netscaler-CVE-2026-8877123★ · 2026-09-28
- craigsblackie/cve-2026-88771-netscaler0★ · 2026-09-28
- srrelitz2/CyberWeather0★ · 2026-10-06
- watchtowrlabs/citrix-netscaler-cve-2026-88771-iocs0★ · 2026-10-06
- leviathan-offsec/lvx-vuln-research1★ · 2026-10-09