VulnerabilitycriticalExploited in the wild

Urgent Alert: NetScaler bug CVE-2026-3055 probed by attackers could leak sensitive data

Security Affairsby @securityaffairsMar 29, 2026 · 13:33 UTC (Mar 29, 2026)2 min read3 · 1 read

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Analyze CVE-2026-3055 with Vani AIImpact, affected versions, exploitation, mitigations and detection

CVEs: CVE-2026-3055 CVE-2023-4966

Tags: cve-2023-4966 cve-2026-3055 vulnerability

Vulnerabilities mentioned

All

CVE	Vulnerability	CVSS	EPSS	Signals	Published
CVE-2023-4966	Info-Disclosure Buffer Overflow (CitrixBleed) in Citrix NetScaler ADC/Gateway	7.5	100%	KEVRansomware	Oct 10, 2023 KEV Oct 18, 2023
CVE-2026-3055	Out-of-Bounds Read in Citrix NetScaler ADC and Gateway When Used as SAML IDP	9.3	91%	KEVPoC	Mar 23, 2026 KEV Mar 30, 2026

From the original article

2 min read at securityaffairs.com

Attackers are actively probing a critical Citrix NetScaler flaw (CVE-2026-3055) that can leak sensitive data via a memory overread issue. A critical vulnerability, tracked as CVE-2026-3055 (CVSS score of 9. 3), in Citrix NetScaler ADC and Gateway is already being actively probed by attackers.

Security Affairs

By @securityaffairs · securityaffairs.com

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