Paper/Archive/CVE-2026-88771

CVE-2026-88771

Citrix NetScaler ADC — A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands

KEV · due 30 Sep EPSS 82%public exploit SSVC act CVSS 9.5

critical.is priorityof 100

CVSS 9.5 (CNA)9.5 / 10 × 3028.5 In CISA KEV+3030.0 EPSS percentile 99.7.997 × 2019.9 Exploit: SSVC active+1010.0 SSVC exploitation: active+1010.0

Description · from the CVE record

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

ProductAffectedFixed inSource

ADC< 14.1-73.3714.1-73.37CNA

ADC< 13.1-64.2313.1-64.23CNA

ADC< 14.1-73.37 FIPS14.1-73.37 FIPSCNA

ADC< 13.1.37.279 FIPS and NDcPP13.1.37.279 FIPS and NDcPPCNA

Gateway< 14.1-73.3714.1-73.37CNA

Gateway< 13.1-64.2313.1-64.23CNA

Scores by source

NetScaler (CNA)9.5CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refsupport.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096 refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88771 kevcisa.gov/known-exploited-vulnerabilities-catalog