Quick answers
- Is CVE-2026-8451 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-8451 being exploited in the wild.
- How severe is CVE-2026-8451?
- 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-2026-8451?
- 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-2026-8451 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-8451?
- 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
A memory overread vulnerability exists in NetScaler ADC and NetScaler Gateway due to insufficient input validation when the devices are configured as a SAML Identity Provider (IdP). An unauthenticated remote attacker can exploit this flaw by sending specially crafted requests to the SAML endpoint. Successful exploitation can allow the attacker to read sensitive data from the system's memory or cause a denial-of-service condition. The vulnerability affects multiple versions including 14.1 and 13.1, and patches have been released to address the issue.
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