Quick answers
- Is CVE-2026-88778 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88778 being exploited in the wild.
- How severe is CVE-2026-88778?
- Informational severity, published 27 September 2026.
- Which products and versions are affected?
- Citrix NetScaler ADC before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, before 13.1.37.279 FIPS and NDcPP; Citrix NetScaler Gateway before 14.1-73.37, before 13.1-64.23.
- Is there a fix for CVE-2026-88778?
- 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-2026-88778 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-88778?
- Check whether you run Citrix NetScaler ADC or Citrix NetScaler Gateway at an affected version. 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
The vulnerability is a predictable exact value from previous values issue affecting cryptographic or random number generation functions in NetScaler ADC and Gateway. An attacker with network access can exploit this weakness to predict security-critical values, potentially bypassing authentication, session protection, or other security mechanisms. Patches are available for affected versions.
Affected products
- Citrix NetScaler ADC before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, before 13.1.37.279 FIPS and NDcPP
- Citrix NetScaler Gateway before 14.1-73.37, before 13.1-64.23
Timeline
- 2026-09-27: disclosed