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Luu, T.J.

🔥 This vulnerability is being actively exploited in the wild (CISA Known Exploited Vulnerabilities catalog)

CVE-2026-3055: Citrix NetScaler Out-of-Bounds Read Vulnerability

infovulnerability🔥 Actively Exploited

security

Source: CISA Known Exploited VulnerabilitiesMarch 29, 2026CVE-2026-3055

Summary

Citrix NetScaler contains an out-of-bounds read vulnerability (a memory access bug where software reads past the boundaries of allocated memory) in its SAML IDP (SAML identity provider, which authenticates users) component, potentially exposing sensitive data. This vulnerability is currently being actively exploited by attackers in the wild. The vulnerability affects multiple NetScaler products including NetScaler ADC, NetScaler Gateway, and their FIPS and NDcPP variants.

Solution / Mitigation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Consult the Citrix Security Bulletin (CTX696300) for detailed patching information.

Vulnerability Details

EPSS (30-day exploit probability)

EPSS: 0.0%

Patch Available

Yes

Exploit Maturity

🔥 Actively Exploited

Disclosure Date

March 29, 2026

Classification

Attack SophisticationModerate

Taxonomy References

CWE (Weakness Type)

CWE-125

CAPEC (Attack Pattern)

CAPEC-540

Monthly digest — independent AI security research

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-3055

First tracked: March 30, 2026 at 08:00 PM

Classified by LLM (prompt v3) · confidence: 95%