CVE-2023-4966

Known Exploited
Unauthenticated sensitive information disclosure

Description

Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA  virtual server.

Category

9.4
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 94.38% Top 5%
KEV Since 
Vendor Advisory citrix.com
Affected: Citrix NetScaler ADC
Affected: Citrix NetScaler Gateway
Published at:
Updated at:

References

Link Tags
https://support.citrix.com/article/CTX579459 vendor advisory
http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-4966?
CVE-2023-4966 has been scored as a critical severity vulnerability.
How to fix CVE-2023-4966?
To fix CVE-2023-4966, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4966 being actively exploited in the wild?
It is confirmed that CVE-2023-4966 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4966?
CVE-2023-4966 affects Citrix NetScaler ADC, Citrix NetScaler Gateway.
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