CVE-2026-3055CRITICAL 9.8CISA KEVEPSS p99.7%

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

Citrix / NetScaler

Description

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS84.00% probability of exploitation · percentile 99.7% · 2026-06-18T12:00:27Z
Published2026-03-23
Last modified2026-03-31

CISA KEV entry

Added to KEV: 2026-03-30

Underlying weaknesses· 1

CWE-125

References

  1. https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300
  2. https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/
  3. https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055

1

TypeTargetConfidenceTier
WeaknessOut-of-bounds Readcwe-1250%live

(incoming)1

TypeTargetConfidenceTier
KEVEntryCitrix NetScaler Out-of-Bounds Read Vulnerabilitykev-cve-2026-30550%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
CVE
Citrix NetScaler Memory Overflow Vulnerability
CVE
Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability
CVE
Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
CVE
CVE-2025-7776
CVE
Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.