What is CVE-2026-107406?
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: * For the following versions: Applicable only when configured as a SAML IdP: * NetScaler ADC and NetScaler Gateway between 14.1-73.37 and 14.1-73.41, inclusive * NetScaler ADC 14.1-FIPS between 14.1-73.37 FIPS and 14.1-73.41 FIPS, inclusive * NetScaler ADC and NetScaler Gateway between 13.1-64.23 and 13.1-64.28, inclusive * NetScaler ADC 13.1-FIPS between 13.1-NDcPP 13.1-37.279 and 13.1- 37.282, inclusive For the following versions: Applicable only when configured as a SAML SP or SAML IdP: * NetScaler ADC and NetScaler Gateway before 14.1-73.37 * NetScaler ADC 14.1-FIPS before 14.1-73.37 FIPS * NetScaler ADC and NetScaler Gateway before 13.1-64.23 * NetScaler ADC 13.1-FIPS before13.1-NDcPP 13.1-37.279
2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 2 days ago.
Severity and exploitation probability
- CVSS v4.0 base score
- 9.5 — Critical (derived from score)
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 - CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 4.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-10-08
Is CVE-2026-107406 being exploited?
No public exploitation evidence for CVE-2026-107406 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-10-08. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.
Affected products and versions
- NetScaler: ADC, Gateway
How to fix CVE-2026-107406
No vendor patch reference has been recorded for CVE-2026-107406 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-2026-107406
1 tracked threat in the Threadlinqs corpus references CVE-2026-107406, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, NVD, GitHub Security Advisories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.