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CVE-2023-6548: Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability

criticalknown exploitedCVE-2023-6548
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Citrix NetScaler ADC and NetScaler Gateway contain a code injection vulnerability that allows for authenticated remote code execution on the management interface with access to NSIP, CLIP, or SNIP.

CSIRTS triage

vendor: Citrixproduct: NetScaler ADC and NetScaler GatewayRemote code execution
What
A code injection vulnerability allows for authenticated remote code execution on the management interface.
Who is affected
Users of Citrix NetScaler ADC and NetScaler Gateway.
Urgency
Immediate remediation is necessary due to active exploitation and critical severity.
Action
Apply the latest security patches from Citrix.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-01-17
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-6548

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2023-6548coverage & exploitation statusNVD · CVE.org

Recent advisories for Citrix NetScaler ADC

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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