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
NISTNIST
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
flexeraCNA
---
---
CISA-ADPADP
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 21%
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