CVE-2021-41526 - Vulnerability Details - OpenCVE

A vulnerability has been reported in the windows installer (MSI) built with InstallScript custom action. This vulnerability may allow privilege escalation when invoked ‘repair’ of the MSI which has an InstallScript custom action.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00073.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:flexera:revenera_installshield::::::windows::*
	cpe:2.3:a:flexera:revenera_installshield:2021:-::::windows::*
	cpe:2.3:a:flexera:revenera_installshield:2021:r1::::windows::*

No data.

No data.

Project Subscriptions

Vendors	Products
Flexera Subscribe	Revenera Installshield Subscribe

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
http://seclists.org/fulldisclosure/2024/Apr/24
https://community.flexera.com/t5/InstallShield-Knowledge-Base/CVE-2021-41526-Privilege-escalation-vulnerability-during-MSI/ta-p/218137/jump-to/first-unread-message
https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0011/MNDT-2021-0011.md

History

Tue, 24 Feb 2026 20:15:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:flexera:revenera_installshield:-:::::windows::
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: flexera

Published: 2023-03-29T00:00:00.000Z

Updated: 2024-08-04T03:15:28.449Z

Reserved: 2021-09-20T00:00:00.000Z

Link: CVE-2021-41526

Vulnrichment

Updated: 2024-08-04T03:15:28.449Z

NVD

Status : Modified

Published: 2023-03-29T21:15:07.810

Modified: 2024-11-21T06:26:21.203

Link: CVE-2021-41526

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-noinfo

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