Ivanti LANDesk Management Suite up to 4.2-1.9 /client/index.php validate before canonicalize

Summaryinfo

A vulnerability described as problematic has been identified in Ivanti LANDesk Management Suite up to 4.2-1.9. This impacts an unknown function of the file /client/index.php. Such manipulation with the input %3F.php leads to validate before canonicalize. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is documented as CVE-2025-43716. The attack can be executed remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Ivanti LANDesk Management Suite up to 4.2-1.9 and classified as problematic. Affected by this issue is an unknown code block of the file /client/index.php. The manipulation with the input value %3F.php leads to a validate before canonicalize vulnerability. Using CWE to declare the problem leads to CWE-180. The product validates input before it is canonicalized, which prevents the product from detecting data that becomes invalid after the canonicalization step. Impacted is confidentiality. CVE summarizes:

A directory traversal vulnerability exists in Ivanti LANDesk Management Gateway through 4.2-1.9. By appending %3F.php to the URI of the /client/index.php endpoint, an attacker can bypass access controls and gain unauthorized access to various endpoints such as /client/index.php%3F.php/gsb/firewall.php within the management web panel, potentially exposing sensitive device information. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

The advisory is shared for download at medium.com. This vulnerability is handled as CVE-2025-43716 since 04/17/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at medium.com. It is declared as proof-of-concept. By approaching the search of inurl:client/index.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-12199). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Ivanti

Name

• LANDesk Management Suite

Version

• 4.2-1.0
• 4.2-1.1
• 4.2-1.2
• 4.2-1.3
• 4.2-1.4
• 4.2-1.5
• 4.2-1.6
• 4.2-1.7
• 4.2-1.8
• 4.2-1.9

License

• commercial

Support

• end of life

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Once again VulDB remains the best source for vulnerability data.

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