CVE-2021-41526

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
flexerarevenera_installshield
𝑥
< 2021
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
flexerarevenera_installshield
𝑥
< 2021
ADP
References
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
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