Check Point Advisories

Aruba Networks Aruba Instant Arbitrary File Write (CVE-2021-25156)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-2328
Date Published:	30 Jun 2025
Severity:	Medium
Last Updated:	Monday 30 June, 2025
Source:
Industry Reference:	CVE-2021-25156
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Aruba Networks Instant 6.4.0.0 and later, 6.4.4.8-4.2.4.18 and prior Aruba Networks Instant 6.5.0.0 and later, prior to 6.5.4.19 Aruba Networks Instant 8.3.0.0 and later, prior to 8.3.0.15 Aruba Networks Instant 8.5.0.0 and later, prior to 8.5.0.12 Aruba Networks Instant 8.6.0.0 and later, prior to 8.6.0.7 Aruba Networks Instant 8.7.1.0 and later, prior to 8.7.1.1
Vulnerability Description	An arbitrary file write vulnerability exists in Aruba Networks Instant. Successful exploitation of this vulnerability could allow a remote attacker to damage users system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Aruba Networks Aruba Instant Arbitrary File Write (CVE-2021-25156) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Client Enforcement Violation.
Attack Information: Aruba Networks Aruba Instant Arbitrary File Write (CVE-2021-25156)