Search/CVE-2026-19490
● CVE — Critical

CVE-2026-19490

VendorcitrixProductnetscaler application delivery controller, netscaler gatewayDiscoveredAug 19, 2026UpdatedOct 26, 2026

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.

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CVSS v3.1
9.8 CRITICAL
EPSS
32.7%
probability of exploitation in 30 days
CISA KEV
Listed
confirmed active exploitation
News coverage
9
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 21, 2026 → Oct 26, 2026
▲ 32.3pp
0.34% → 32.7% over 10 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Connections
16 relationships
Timeline
disclosure → media coverage
Aug 19, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026
Aug 21, 2026
helpnetsecurity.com reports: Citrix urges customers to fix critical NetScaler authentication bypass (CVE-2026-19490)
Aug 24, 2026
research.checkpoint.com reports: 24th August – Threat Intelligence Report
Sep 4, 2026
bleepingcomputer.com reports: Critical Citrix NetScaler auth bypass now leveraged in attacks
Sep 7, 2026
advisories.ncsc.nl reports: NCSC-2026-0318 [1.01] [H/H] Kwetsbaarheden verholpen in Citrix NetScaler ADC en NetScaler Gateway
Sep 10, 2026
securityweek.com reports: Critical NetScaler Vulnerability Exploited in Attacks
Sep 27, 2026
thehackernews.com reports: Warning: Two Unpatched Citrix NetScaler RCE Zero-Days Under Active Exploitation
Sep 27, 2026
bleepingcomputer.com reports: Citrix confirms two NetScaler RCE zero-days exploited in attacks
Sep 28, 2026
bleepingcomputer.com reports: CISA orders feds to patch exploited Citrix flaws by Wednesday
Sep 28, 2026
securityweek.com reports: Citrix Confirms 2 NetScaler Zero-Days After Admins Pulled the Plug
Public PoC (3)
github.com/TarPeg007/CVE-2026-19490github.com/BishopFox/CVE-2026-19490-checkgithub.com/CompleteTech-Security/netscaler-cve-2026-19490-check
Unverified third-party code — review before executing.