highclosedpatched

Citrix NetScaler: Citrix NetScaler Out-of-Bounds Read Vulnerability

› Citrix NetScaler

last updated Mar 30, 2026

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started: Mar 30, 2026
closed: Mar 30, 2026
CVEs: 1
sources: 3

## summary

Citrix NetScaler ADC (formerly Citrix ADC), NetScaler Gateway (formerly Citrix Gateway) and NetScaler ADC FIPS and NDcPP contain an out-of-bounds reads vulnerability when configured as a SAML IDP leading to memory overread. Added to CISA KEV on 2026-03-30.

severity: Actively exploited (CISA KEV)

## cve ids[1]

CVE-2026-3055

## affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

## fixed in

See vendor advisory linked in sources

## timeline[1]

Mar 30, 2026
CISA added CVE-2026-3055 to the KEV catalog (due 2026-04-02).

## advisories[2]

## news & write-ups[1]

Citrix NetScaler — CVE-2026-3055Citrix · Mar 30, 2026

## notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).

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