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CVE-2023-6549Vulnerability

Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

Exploited in the wildCISA added it to its Known Exploited Vulnerabilities list on .

Reported by 1 independent source · first reported by Tenable · last reported

Last reported 27 days ago

CISA KEVAdded 17 Jan 2024
Fix due 7 Feb 2024
Used by ransomware: not knownCISA KEV catalogue
EPSS57.6%
higher than 99% of CVEsFIRST EPSS, as of 23 Oct 2026

What the reports say

1 report, newest first · the exact sentence from each

  1. “CVE-2023-6549Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow vulnerability2024-01-17UnknownCVE-2023-6548, CVE-2023-6549: Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC and NetScaler Gateway”

    TenableVendor
    Frequently asked questions about reported Citrix NetScaler zero-day vulnerabilities

Indicators reported together

named in the same reports

Also named with it: CVE-2026-19489, CVE-2026-19490, CVE-2025-6543

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