# CVE-2023-6549

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

- Page: https://www.vulneraibility.com/cve/CVE-2023-6549
- CVSS: 8.2
- Known exploited: yes, in CISA KEV since 2024-01-17; CISA due date 2024-02-07
- EPSS: 57.63% (percentile 99.1)
- Detection templates only, no public exploit found: 1 Nuclei template
- CISA SSVC: exploitation active, automatable yes, technical impact partial (assessed 2024-01-31)
- Weakness: CWE-119
- Published: 2024-01-17

## Affected versions

- Cloud Software Group NetScaler ADC: affected >= 14.1 and < 12.35; >= 13.1 and < 51.15; >= 13.0 and < 92.21; >= 13.1-FIPS and < 37.176; >= 12.1-FIPS and < 55.302; >= 12.1-NDcPP and < 55.302

A version outside these ranges is not a statement that it is unaffected.

## References

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

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.