What is CVE-2026-107408?
Memory corruption in DNS / DNS-over-HTTPS (DoH) can lead to unpredictable or erroneous behavior or Denial of Service in Citrix NetScaler
2 affected-product entries are recorded, across 1 vendor, listed below.
Severity and exploitation probability
- CVSS v4.0 base score
- 9.3 — Critical (derived from score)
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 - CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 4.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-11-13
Is CVE-2026-107408 being exploited?
It currently carries a trending score of 40 in the Threadlinqs vulnerability feed.
Affected products and versions
- Citrix NetScaler: ADC, Gateway
How to fix CVE-2026-107408
No vendor patch reference has been recorded for CVE-2026-107408 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-107408
2 tracked threats in the Threadlinqs corpus reference CVE-2026-107408, either in the campaign’s CVE list or as an indicator on the campaign record.
- Citrix NetScaler ADC and Gateway: 28 Vulnerabilities Patched (CTX697305), Including Critical CVE-2026-120868 in Default Configurations — CRITICAL · 2026-11-13
- Citrix Patches 12 NetScaler ADC/Gateway/Console and Secure Access Client Flaws, Including Authentication Bypass (CVE-2026-120869) — CRITICAL · 2026-11-12
Sources
Enriched from CVE.org, NVD, GitHub Security Advisories. This product uses the NVD API but is not endorsed or certified by the NVD.