Netscaler Application Delivery Controller
CVE-2024-8534
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.4 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could corrupt memory to execute arbitrary code or crash the application by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Memory safety vulnerability leading to memory corruption and Denial of Service in NetScaler ADC and Gateway if the appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled OR. Rated high severity (CVSS 8.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. Memory safety vulnerability leading to memory corruption and Denial of Service in NetScaler ADC and Gateway if the appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled OR the appliance must be configured as a Gateway (VPN Vserver) and RDP Proxy Server Profile is created and set to Gateway (VPN Vserver) OR the appliance must be configured as a Auth Server (AAA Vserver) with RDP Feature enabled Affected products include: Citrix Netscaler Application Delivery Controller, Citrix Netscaler Gateway.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:L
Primary rating from Vendor (citrix) · only source for this CVE.
CVSS VectorVendor: citrix
DescriptionCVE.org
Memory safety vulnerability leading to memory corruption and Denial of Service in NetScaler ADC and Gateway if the appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled OR the appliance must be configured as a Gateway (VPN Vserver) and RDP Proxy Server Profile is created and set to Gateway (VPN Vserver) OR the appliance must be configured as a Auth Server (AAA Vserver) with RDP Feature enabled
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
Citrix NetScaler ADC and Gateway contain an unauthenticated remote code execution vulnerability exploited massively in s
Sensitive information disclosure in Citrix NetScaler ADC and NetScaler Gateway - widely known as 'Citrix Bleed' - allows
Memory overread in Citrix NetScaler ADC and NetScaler Gateway (versions before 14.1-43.56 and 13.1-58.32) lets remote un
Unauthenticated information disclosure in Citrix NetScaler ADC and NetScaler Gateway (versions 14.1 before 73.32 and 13.
Citrix NetScaler ADC and Gateway contain a memory overflow vulnerability (CVE-2025-6543, CVSS 9.8) leading to unintended
Denial of service and memory corruption in Citrix NetScaler ADC and NetScaler Gateway allows remote unauthenticated atta
Memory overread in Citrix NetScaler ADC and NetScaler Gateway lets remote attackers read out-of-bounds memory when the a
Improper access control vulnerability in NetScaler ADC and NetScaler Gateway management interfaces that allows unauthent
Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CV
Unspecified vulnerability in the Diffie-Hellman key agreement implementation in the management GUI Java applet in Citrix
Unspecified vulnerability in the management GUI in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler
Denial of service in Citrix NetScaler ADC and NetScaler Gateway stems from multiple memory overflow conditions that prod
GitHub PoC
Exploit-DB