by Kastro
Paper/Archive/CVE-2026-88777

CVE-2026-88777

Citrix NetScaler ADC — Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 53.9.539 × 2010.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Memory overflow vulnerability 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 unpredictable or erroneous behavior or Denial of Service

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

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NetScaler (CNA)8.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refsupport.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_88771_CVE_2026_88772_CVE_2026_88773_CVE_2026_88774_CVE_2026_88775_CVE_2026_88776_CVE_2026_88777_and_CVE_2026_88778