Citrix NetScaler ADC/NetScaler Gateway up to 29.71/37.206/55.33/55.320 Kerberos SSO Configuration access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Citrix NetScaler ADC and NetScaler Gateway up to 29.71/37.206/55.33/55.320. This impacts an unknown function of the component Kerberos SSO Configuration Handler. The manipulation leads to access control. This vulnerability is listed as CVE-2024-8535. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Citrix NetScaler ADC and NetScaler Gateway up to 29.71/37.206/55.33/55.320. It has been rated as critical. This issue affects an unknown code of the component Kerberos SSO Configuration Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Authenticated user can access unintended user capabilities in NetScaler ADC and NetScaler Gateway if the appliance must be configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) with KCDAccount configuration for Kerberos SSO to access backend resources OR the appliance must be configured as an Auth Server (AAA Vserver) with KCDAccount configuration for Kerberos SSO to access backend resources

It is possible to read the advisory at support.citrix.com. The identification of this vulnerability is CVE-2024-8535 since 09/06/2024. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/25/2025). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 211474 (NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX691608)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 29.72, 37.207, 55.34 or 55.321 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211474). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211474
Nessus Name: NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX691608)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: NetScaler ADC/NetScaler Gateway 29.72/37.207/55.34/55.321

Timelineinfo

09/06/2024 🔍
11/12/2024 +67 days 🔍
11/12/2024 +0 days 🔍
07/25/2025 +255 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: CTX691608
Status: Confirmed

CVE: CVE-2024-8535 (🔍)
GCVE (CVE): GCVE-0-2024-8535
GCVE (VulDB): GCVE-100-284183

Entryinfo

Created: 11/12/2024 20:01
Updated: 07/25/2025 21:28
Changes: 11/12/2024 20:01 (69), 11/16/2024 03:31 (2), 07/25/2025 21:28 (12)
Complete: 🔍
Cache ID: 216:4C9:103

Be aware that VulDB is the high quality source for vulnerability data.

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