Vulnerability
CVE-2026-107406
Citrix NetScaler ADC and Gateway: memory overflow in SAML configurations
Most severe levelDEFCON 4 · Moderate risk
Official data
- CVSS 4.0
- 9.5 · critical
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/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 - Weakness
- CWE-119
- EPSS
- 1.87% probability of exploitation in the next 30 days, higher than 79% of CVEs
- CISA KEV catalogue
- No
Sources: NVD (CVSS, weakness, publication), FIRST (EPSS), CISA (KEV catalogue).
Data read on 5 November 2026.
Timeline
- 8 October 2026Published on NVD
- 9 October 2026First in the DefenceLevel briefing
In DefenceLevel briefings6 days
- 15 October 2026New in the last 24 hoursDEFCON 4
- 14 October 2026Still ongoingDEFCON 4
- 13 October 2026New in the last 24 hoursDEFCON 4
- 12 October 2026New in the last 24 hoursDEFCON 4
- 10 October 2026New in the last 24 hoursDEFCON 4
- 9 October 2026New in the last 24 hoursDEFCON 4
Last 12 months.
The full analysis is in the briefingThe full analysis is in your archive
Why it matters now, who is affected and what to do: every day at 05:00 UTC, for subscribers.Why it matters, who is affected and what to do, as in the daily briefing.