Vulnerability in Zoom Plugin For Microsoft Outlook
CVE-2021-34413
All versions of the Zoom Plugin for Microsoft Outlook for MacOS before 5.3.52553.0918 contain a Time-of-check Time-of-use (TOC/TOU) vulnerability during the plugin installation process. This could allow a standard user to write their own malicious application to the plugin directory, allowing the malicious application to execute in a privileged context.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Zoom Plugin For Microsoft Outlook
- Zoom Plugin For Microsoft Outlook macOS — versions All versions before 5.3.52553.0918
Weakness classification (CWE)
References
- explore.zoom.us/en/trust/security/security-bulletin/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34413?
- CVE-2021-34413 is a high-severity vulnerability in Zoom Plugin For Microsoft Outlook, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.5/10. Published 2021-09-27.
- How severe is CVE-2021-34413?
- High severity. CVSS v3 base score is 7.5 out of 10.