Out-of-bounds Read in Netscaler Adc
CVE-2026-3055
Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread
Vulnerability class: Buffer Overflow
EPSS: 0.898 (99.6th percentile) — read the EPSS interpretation.
Affected products
- Netscaler Adc — versions 14.1, 13.1, 13.1 FIPS and NDcPP
- Netscaler Gateway — versions 14.1, 13.1
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2026-3055?
- CVE-2026-3055 is a vulnerability in Netscaler Adc, classified under Out-of-bounds Read. Published 2026-03-23.
- Is CVE-2026-3055 known to be exploited?
- Yes. CVE-2026-3055 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-03-30), indicating it is being actively exploited. 6 public proof-of-concept repositories are indexed.