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Zero-Day Attacks Exploited Critical Vulnerability in Citrix ADC and Gateway
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Citrix security advisory (AV26-645) – Update 3
Canada's Cyber Centre updates Citrix advisory as CVE-2026-8451 and CVE-2026-8452 in NetScaler ADC/Gateway are confirmed exploited in the wild.
The Canadian Centre for Cyber Security updated advisory AV26-645 on August 26, 2026, covering critical vulnerabilities in Citrix NetScaler ADC and Gateway (versions 14.1 before 14.1-72.61 and 13.1 before 13.1-63.18, plus FIPS builds). Open-source reporting indicates CVE-2026-8451 and CVE-2026-8452 are being exploited in the wild. Update 3 references related CISA action, and patched builds were released starting June 30, 2026.
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Citrix NetScaler zero-day exploited in the wild, patch is available (CVE-2023-3519)
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Citrix NetScaler Under Active Recon for CVE-2026
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Citrix Urges Patching Critical NetScaler Flaw Allowing Unauthenticated Data Leaks
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Recent SSRF Flaw in Ivanti VPN Products Undergoes Mass Exploitation
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