CVE-2019-18988: TeamViewer Desktop Bypass Remote Login Vulnerability
TeamViewer Desktop allows for bypass of remote-login access control because the same AES key is used for different customers' installations. If an attacker were to know this key, they could decrypt protected information stored in registry or configuration files or decryption of the Unattended Access password to the system (which allows for remote login to the system).
| Vendor | TeamViewer |
|---|---|
| Product | Desktop |
| Date added to KEV | 2021-11-03 |
| Due date (BOD 22-01) | 2022-05-03 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-521 |
| Required action | Apply updates per vendor instructions. |
What to do
- Identify every instance of TeamViewer Desktop in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply updates per vendor instructions.
- Federal civilian agencies must act by 2022-05-03 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2019-18988 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://nvd.nist.gov/vuln/detail/CVE-2019-18988