Vulnerability in Flexera Revenera Installshield
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Flexera Revenera Installshield — versions 2021
Public proof-of-concept exploits
References
- community.flexera.com/t5/InstallShield-Knowledge-Base/CVE-2021-41526-Privilege-… (Vendor Advisory)
- github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0011/MNDT-2… (Third Party Advisory)
- seclists.org/fulldisclosure/2024/Apr/24 (mailing-list)
Frequently asked questions
- What is CVE-2021-41526?
- CVE-2021-41526 is a high-severity vulnerability in Flexera Revenera Installshield. CVSS score: 7.8/10. Published 2023-03-29.
- How severe is CVE-2021-41526?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-41526 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.