Paper/Archive/CVE-2026-8655

CVE-2026-8655

NetScaler ADC — Multiple Memory overflow vulnerabilities leading to unpredictable or erroneous behavior and Denial of Service

EPSS 0.6%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (NVD)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 50.3.503 × 2010.1 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursive resolver deployment

Affected

ProductAffectedFixed inSource

ADC14.1 – < 72.6172.61CNA

ADC13.1 – < 63.1863.18CNA

ADC14.1 FIPS – < 72.6172.61CNA

ADC13.1 FIPS and NDcPP – < 37.27237.272CNA

Gateway14.1 – < 72.6172.61CNA

Gateway13.1 – < 63.1863.18CNA

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:L

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refsupport.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604