What is CVE-2026-19489?
Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
The record classifies CVE-2026-19489 under weakness class CWE-120. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 47 days ago.
Severity and exploitation probability
- CVSS v4.0 base score
- 8.8 — High (derived from score)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:L - CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 4.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-08-19, last modified 2026-08-20
Is CVE-2026-19489 being exploited?
No public exploitation evidence for CVE-2026-19489 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-08-20. 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-2026-19489
No vendor patch reference has been recorded for CVE-2026-19489 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-2026-19489
1 tracked threat in the Threadlinqs corpus references CVE-2026-19489, 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.