Citrix patches 28 NetScaler flaws, one critical on default installs
CVE-2026-120868, a CVSS 9.3 memory overflow, needs no login or special feature and can crash any unpatched appliance.
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CVE-2026-107414
Memory overflow in Citrix NetScaler WebAuth authentication
- CVSS 4.0
- 8.7 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
A memory overflow in WebAuth authentication on Citrix NetScaler ADC and Citrix NetScaler Gateway can cause unpredictable or erroneous behavior or a denial of service. A remote attacker can trigger it over the network with no privileges and no user interaction. Impact is limited to availability of the affected appliance. Affected builds are not listed.
What to do: Apply Citrix's update for CVE-2026-107414. No workaround is stated.
| Product | Affected |
|---|---|
| Citrix NetScaler ADC | — |
| Citrix NetScaler Gateway | — |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
Memory overflow in WebAuth authentication can lead to unpredictable or erroneous behavior or Denial of Service in Citrix NetScaler ADC and Citrix NetScaler Gateway.
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X