Quick answers
- Is CVE-2026-8655 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-8655 being exploited in the wild.
- How severe is CVE-2026-8655?
- Informational severity, with a CVSS score of 8.8, published 30 June 2026.
- Which products and versions are affected?
- NetScaler ADC 14.1 before 72.61, 13.1 before 63.18, 14.1 FIPS before 72.61, 13.1 FIPS and NDcPP before 37.272; NetScaler Gateway 14.1 before 72.61, 13.1 before 63.18.
- Is there a fix for CVE-2026-8655?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-8655 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-8655?
- Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
NetScaler ADC and Gateway contain multiple memory overflow vulnerabilities triggered under specific configurations: Oracle load balancing, DNS Proxy, or DNS recursive resolver deployments. The root cause is improper memory management when handling these specific protocols or services. A remote, unauthenticated attacker can exploit these flaws over the network to cause a Denial of Service (DoS) or potentially achieve limited data integrity/confidentiality impacts. Patches have been released for versions 14.1 and 13.1, including FIPS-validated builds.
Affected products
- NetScaler ADC 14.1 before 72.61, 13.1 before 63.18, 14.1 FIPS before 72.61, 13.1 FIPS and NDcPP before 37.272
- NetScaler Gateway 14.1 before 72.61, 13.1 before 63.18
Timeline
- 2026-06-30: disclosed
- 2026-06-30: advisory