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Vulnerability IntelligenceCVE-2026-3055

CVE-2026-3055

CRITICAL9.8

Insufficient input validation leading to memory overread

Published Mar 23, 2026

Modified 6 days ago

Details

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

References

ADVISORY

https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/

WEB

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300

WEB

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-3055

CVSS Analysis

CVSS v4.0

9.3

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

HighVC:H

Vuln. Integrity

HighVI:H

Vuln. Availability

HighVA:H

Subsequent System

Subseq. Confidentiality

LowSC:L

Subseq. Integrity

LowSI:L

Subseq. Availability

LowSA:L

9.3/CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Weakness Type (CWE)

Memory Safety

CWE-125

Out-of-bounds Read

Ecosystems

Timeline

PublishedMar 23, 2026

ModifiedMar 31, 2026

CVE-2026-3055 | Mondoo Vulnerability Intelligence