Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-3055

CVE-2026-3055CRITICAL

NetScaler ADC — Insufficient input validation leading to memory overread

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   H   H    9.3   .0404   90.3   YES

AFFECTED
  Product  Versions  Fixed
  ADC      14.1 –    —
  Gateway  14.1 –    —

TIMELINE
  Feb 23  Reserved by NetScaler
  Mar 23  Published (CNA: NetScaler)
  Mar 30  Added to CISA KEV, remediation due 2026-04-02

CWE-125 · CNA: NetScaler · CVSS v4.0 · 3 references · KEV due April 2, 2026

Description

Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
February 23, 2026	Reserved	Reserved by NetScaler
March 23, 2026	Published	Published (CNA: NetScaler)
March 30, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-04-02

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
NetScaler	ADC	—	14.1	—
NetScaler	Gateway	—	14.1	—

Weaknesses

CWE-125

References (3)

Authoritative record: CVE-2026-3055 at cve.org

Vendors: netscaler

Weaknesses: CWE-125

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-3055 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.