CriticalCVECISA — Known Exploited Vulnerabilities· 18 Oct 2023

CVE-2023-4966 — Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

Severity: Critical · Kind: Vulnerability

Plain-English summary on the way

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From the source

Citrix NetScaler ADC and NetScaler Gateway. Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for sensitive information disclosure when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. Required action: Apply mitigations and kill all active and persistent sessions per vendor instructions [https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/] OR discontinue use of the product if mitigations are unavailable.

Vulnerability facts

CVE: CVE-2023-4966
On CISA KEV since: 2023-10-18
Ransomware use: Known

Read the original advisory →← All threat intel

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Plain-English summaries are AI-generated and reviewed for tone, not technical accuracy. For incident response, always rely on the original source linked above.