CVE-2023-4966 KEV
9.4
CRITICAL · CVSS 3.1 · EPSS 100% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2023-11-08.
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.
Scoring
| CVSS | 9.4 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
| EPSS | 100% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | yes — remediate by 2023-11-08 |
| Public exploit | none known |
| Published | 2023-10-10 |
| Last modified | 2026-07-31 |
CISA KEV
| Name | Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability |
|---|---|
| Added | 2023-10-18 |
| Due | 2023-11-08 |
| Vendor / product | Citrix / NetScaler ADC and NetScaler Gateway |
| Ransomware use | known |
Affected (2)
| Vendor | Product |
|---|---|
| citrix | netscaler application delivery controller |
| citrix | netscaler gateway |
References
- http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html
- https://support.citrix.com/article/CTX579459
- http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html
- https://support.citrix.com/article/CTX579459
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966
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