Citrix NetScaler ADC/NetScaler Gateway up to 43.55/58.31 Management Interface improper validation of specified quantity in input

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as very critical has been found in Citrix NetScaler ADC and NetScaler Gateway up to 43.55/58.31. The affected element is an unknown function of the component Management Interface. This manipulation causes improper validation of specified quantity in input. This vulnerability appears as CVE-2025-5349. The attacker needs to be present on the local network. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Citrix NetScaler ADC and NetScaler Gateway up to 43.55/58.31. It has been declared as very critical. Affected by this vulnerability is some unknown processing of the component Management Interface. The manipulation with an unknown input leads to a improper validation of specified quantity in input vulnerability. The CWE definition for the vulnerability is CWE-1284. The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway

It is possible to read the advisory at support.citrix.com. This vulnerability is known as CVE-2025-5349 since 05/30/2025. The exploitation appears to be easy. Access to the local network is required for this attack to succeed. The exploitation doesn't need any form of authentication. 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 08/07/2025).

The vulnerability scanner Nessus provides a plugin with the ID 240341 (NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX693420)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 43.56 or 58.32 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (240341) and EUVD (EUVD-2025-18494). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Network Management Software

Vendor

• Citrix

Name

• NetScaler ADC
• NetScaler Gateway

Version

• 43.0
• 43.1
• 43.2
• 43.3
• 43.4
• 43.5
• 43.6
• 43.7
• 43.8
• 43.9
• 43.10
• 43.11
• 43.12
• 43.13
• 43.14
• 43.15
• 43.16
• 43.17
• 43.18
• 43.19
• 43.20
• 43.21
• 43.22
• 43.23
• 43.24
• 43.25
• 43.26
• 43.27
• 43.28
• 43.29
• 43.30
• 43.31
• 43.32
• 43.33
• 43.34
• 43.35
• 43.36
• 43.37
• 43.38
• 43.39
• 43.40
• 43.41
• 43.42
• 43.43
• 43.44
• 43.45
• 43.46
• 43.47
• 43.48
• 43.49
• 43.50
• 43.51
• 43.52
• 43.53
• 43.54
• 43.55
• 58.0
• 58.1
• 58.2
• 58.3
• 58.4
• 58.5
• 58.6
• 58.7
• 58.8
• 58.9
• 58.10
• 58.11
• 58.12
• 58.13
• 58.14
• 58.15
• 58.16
• 58.17
• 58.18
• 58.19
• 58.20
• 58.21
• 58.22
• 58.23
• 58.24
• 58.25
• 58.26
• 58.27
• 58.28
• 58.29
• 58.30
• 58.31

License

• commercial

Website

• Vendor: https://www.citrix.com/

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: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper validation of specified quantity in input
CWE: CWE-1284 / CWE-703
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 240341
Nessus Name: NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX693420)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: NetScaler ADC/NetScaler Gateway 43.56/58.32

Timelineinfo

05/30/2025 🔍
06/17/2025 +18 days 🔍
06/17/2025 +0 days 🔍
08/07/2025 +50 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: CTX693420
Status: Confirmed

CVE: CVE-2025-5349 (🔍)
GCVE (CVE): GCVE-0-2025-5349
GCVE (VulDB): GCVE-100-312703
EUVD: 🔍

Entryinfo

Created: 06/17/2025 15:35
Updated: 08/07/2025 00:15
Changes: 06/17/2025 15:35 (68), 06/17/2025 16:08 (1), 06/25/2025 23:09 (2), 08/07/2025 00:15 (11)
Complete: 🔍
Cache ID: 216::103

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

Discussion

Do you need the next level of professionalism?

Upgrade your account now!