Security Bulletin
Summary
MaaS360 mobile apps (iOS and Android) are able to bypass authentication by using deep link from the browser.
Vulnerability Details
CVEID: CVE-2023-42021
DESCRIPTION: The MaaS360 iOS application could allow an attacker to bypass authentication mechanisms by exploiting the password reset functionality. By initiating a password reset for the MaaS360 account associated with a managed device, an attacker can gain unauthorized access to corporate email, documents, and other sensitive data stored on the device associated with the user in the application sandbox.
CWE: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CVSS Source: IBM X-Force
CVSS Base score: 5.9
CVSS Vector: (CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Maas360 Android Mobile Apps | Android 6.30 - Android 8.30 |
| Maas360 iOS Mobile Apps | iOS 4.40.000 - iOS 5.60 |
Remediation/Fixes
Remediation/Fixes:
Appropriate fixes done on the SAAS portal to remove ways open a deep link
Security enhanced for the data exchanged b/w the SAAS portal and mobile apps
IBM encourages customers to update their systems promptly.
- Update the MaaS360 MDM for Android to version 8.40 or greater. The app is available in the Google Play store; download the latest one while enrolling the device.
- Update the IBM MaaS360 for iOS to version 5.61 or greater. The app is available is in Apple App Store; download the latest one while enrolling the device.
Workarounds and Mitigations
None
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References
Acknowledgement
This vulnerability was reported to IBM by Gurvinder Nokwal from Kroll.
Change History
22 Aug 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
22 August 2026
Initial Publish date:
22 August 2026
UID
ibm17284117