CVE-2021-41526

EUVD-2021-28545
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: 22%
Affected Products (NVD)
VendorProductVersion
flexerarevenera_installshield
𝑥
< 2021
𝑥
= Vulnerable software versions
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