THE article discusses the detection of four active exploits impacting various systems, particularly highlighting the critical NetScaler authentication bypass vulnerability (CVE-2026-19490) patched by Citrix, which has a CVSS score of 9.3. Additionally, it mentions another flaw (CVE-2026-19489) that can lead to denial of service, with both vulnerabilities affecting certain configurations of NetScaler appliances. Users are advised to update their systems immediately as no confirmed exploitation has been reported yet.
Citrix patches critical NetScaler auth bypass flaw CVE-2026-19490
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Citrix NetScaler Zero Days Exploited Against Unpatched Systems
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CISA Tracks Exploitation of Critical N-central, GitLab and MikroTik Flaws
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CISA Flags Four Actively Exploited Flaws Including Cisco Zero Day
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CISA Warns Attackers Are Exploiting Critical Citrix NetScaler Flaw
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CISA Flags Cisco, Citrix and Fortinet Flaws Under Active Attack
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CISA Warns of Actively Exploited Citrix NetScaler Auth Bypass
cisa.gov
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Citrix fixes NetScaler auth bypass flaw CVE-2026-19490
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CVE-2026-19490: Critical Vulnerability Affecting Citrix NetScaler ADC and NetScaler Gateway
rapid7.com
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Citrix patches critical NetScaler auth bypass flaw CVE-2026-19490