CVE-2026-3055

Description

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

Scoring

• CVSS: 9.8 (CRITICAL, 3.1)
• EPSS exploitation probability: Not yet available
• EPSS percentile: Not yet available

CISA KEV status

• Added to KEV: 2026-03-30
• Remediation due date: 2026-04-02
• Known ransomware campaign use: Unknown

Weakness types (CWE)

• CWE-125

References

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

More from Citrix

• CVE-2026-88779 — NetScaler
• CVE-2026-88771 — NetScaler
• CVE-2026-88772 — NetScaler
• CVE-2026-19490 — NetScaler
• CVE-2026-8452 — NetScaler ADC and NetScaler Gateway