Citrix patches 12 NetScaler and Secure Access Client flaws
Fixes cover CVSS 9.3–9.5 memory flaws and an unauthenticated NetScaler Console authentication bypass; Citrix knows of no exploits.
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CVE-2026-120868
Memory overflow in NetScaler ADC and Gateway packet processing
- CVSS 4.0
- 9.3 critical
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
A memory overflow in packet processing on NetScaler ADC and NetScaler Gateway can cause unpredictable or erroneous behavior or a denial of service. A remote attacker can trigger it over the network with no authentication and no user interaction. Both NetScaler ADC and NetScaler Gateway are affected; Citrix has not listed affected builds.
What to do: Apply Citrix's update for CVE-2026-120868 on NetScaler ADC and NetScaler Gateway. 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 Packet Processing can lead to unpredictable or erroneous behavior or Denial of Service in NetScaler ADC and NetScaler Gateway.
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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
In the news
2 storiesCitrix patches 28 NetScaler memory flaws, including unauthenticated CVSS 9.3
CVE-2026-120868 affects every ADC and Gateway deployment, including the default configuration; Citrix reports no exploitation.
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