Vulnerability record/PUBLISHED/Published Nov 13, 2026 07:40:20 UTC

CVE-2026-111337

Memory overflow in Base64 decoding in advanced policy expressions leading to unpredictable or erroneous behavior or Denial of Service in Citrix NetScaler ADC and Citrix NetScaler Gateway.

Base score8.7/ 10

SeverityHighCVSS 4.0

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityHigh

Attack vectorNetworkAV

Attack complexityLowAC

Attack requirementsNoneAT

Privileges requiredNonePR

User interactionNoneUI

Vulnerable system confidentialityNoneVC

Vulnerable system integrityNoneVI

Vulnerable system availabilityHighVA

Subsequent system confidentialityLowSC

Subsequent system integrityLowSI

Subsequent system availabilityLowSA

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

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering AuthorityNetScaler

Last updatedNov 13, 2026 07:40:20 UTC

PublishedNov 13, 2026 07:40:20 UTC

ReservedOct 15, 2026 20:47:37 UTC