CVE-2026-88773 in the critical feed json
HTTP Request Smuggling
published 2026-09-27 42 d ago modified 2026-09-29 40 d ago also EUVD-2026-87961
- cvss
- 10.0
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.1%
- EPSS 3.1% chance of exploitation in 30 days, percentile 87%
- public exploits
- 1
- Metasploit
Summary
Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') 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 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.
Patch / fix
- Citrix NetScaler ADC 13.1-37.279 and NDcPP, 13.1-64.23, 14.1-73.37, 14.1-73.37 FIPS
- Citrix NetScaler Gateway 13.1-64.23, 14.1-73.37 FIPS
Timeline
- First public exploit (Metasploit exploit/freebsd/http/citrix_netscaler_cve_2026_88771)
- Published
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 40 d ago
Exploit prediction
3.08% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/freebsd/http/citrix_netscaler_cve_2026_88771 Citrix NetScaler Unauthenticated Login Log Command Injection (CVE-2026-88771) metasploit exploit, normal rank, 2026-09-27
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N/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 |
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
Affected products
- Citrix NetScaler ADC
- Citrix NetScaler Gateway
Classification
- Weakness
-
- CWE-444 Inconsistent Interpretation of HTTP Requests
- Technology feeds
References
Sources
- CVE List CVE-2026-88773
- NVD CVE-2026-88773
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