CVE-2021-41526 is a privilege escalation vulnerability affecting Windows Installer (MSI) packages built with InstallScript custom actions, specifically impacting Flexera Revenera InstallShield. This high-severity flaw (CVSS 7.8) allows an attacker with local access to achieve high confidentiality, integrity, and availability impacts by triggering a repair of the vulnerable MSI. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is minimal community discussion or media coverage, its potential for local privilege escalation warrants attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2021CPE matchmatch criteria | cpe:2.3:a:flexera:revenera_installshield:*:*:*:*:*:windows:*:* | ||
2021CPE matchmatch criteria | cpe:2.3:a:flexera:revenera_installshield:2021:-:*:*:*:windows:*:* | ||
2021CPE matchmatch criteria | cpe:2.3:a:flexera:revenera_installshield:2021:r1:*:*:*:windows:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.