Vulnerability · Published Jun 30, 2026 · Assigned by NetScaler

CVE-2026-8655Multiple Memory overflow vulnerabilities leading to unpredictable or erroneous behavior and Denial of Service

High 8.8

In plain English

A high-severity memory corruption in ADC from NetScaler. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 4.0)8.8High

Exploit odds (30 days)0.6%top 49.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
NetScaler	ADC	14.1 – before 72.6113.1 – before 63.1814.1 FIPS – before 72.6113.1 FIPS and NDcPP – before 37.272
NetScaler	Gateway	14.1 – before 72.6113.1 – before 63.18

Weakness: CWE-119 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:L

References

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