Vulnerability in Installbuilder
CVE-2020-3979
InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (29.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Installbuilder
- Microsoft Windows
- VMware Installbuilder — versions All InstallBuilder for Qt versions prior to version 20.7.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2020-3979?
- CVE-2020-3979 is a high-severity vulnerability in Installbuilder, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2020-09-18.
- How severe is CVE-2020-3979?
- High severity. CVSS v3 base score is 7.8 out of 10.