Home/CVE/Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CV
CVE

CVE-2023-4967

Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CV

Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA Virtual Server.

HIGH · CVSS 8.2 EPSS 0.00566
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

8
citrix netscaler application delivery controller>= 13.0 and < 13.0-92.19
citrix netscaler application delivery controller>= 13.1 and < 13.1-49.15
citrix netscaler application delivery controller>= 14.1 and < 14.1-8.50
citrix netscaler gateway>= 13.0 and < 13.0-92.19
citrix netscaler gateway>= 13.1 and < 13.1-49.15
citrix netscaler gateway>= 14.1 and < 14.1-8.50
citrix netscaler application delivery controller>= 12.1 and <= 12.1-55.300
citrix netscaler application delivery controller>= 13.1 and <= 13.1-37.164
▣

Scoring & Timeline

8.2
HIGH · CVSS v3.1 · secure@citrix.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Oct 2023 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://support.citrix.com/article/CTX579459/Vendor Advisory
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