🔐 CVE Alert

CVE-2023-6549

HIGH 8.2 ⚠️ CISA KEV
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th

Improper Restriction of Operations within the Bounds of a Memory Buffer in NetScaler ADC and NetScaler Gateway allows Unauthenticated Denial of Service and Out-Of-Bounds Memory Read

CWE CWE-119
Vendor cloud software group
Product netscaler adc
Published Jan 17, 2024
Last Updated Oct 21, 2025
⚠️ Actively Exploited — Act Now

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

Affected Versions

Cloud Software Group / NetScaler ADC
14.1 < 12.35 13.1 < 51.15 13.0 < 92.21 13.1-FIPS < 37.176 12.1-FIPS < 55.302 12.1-NDcPP < 55.302

References

NVD ↗ CVE.org ↗ EPSS Data ↗
support.citrix.com: https://support.citrix.com/article/CTX584986/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20236548-and-cve20236549 cisa.gov: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6549