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).

cat cve-2019-18988.json

Vendor: TeamViewer
Product: Desktop
CVSS: 7.0
EPSS (exploit probability): 4.7%
Status: kev
CISA patch-by (BOD 22-01): May 3, 2022
Published: November 3, 2021
Source: https://nvd.nist.gov/vuln/detail/CVE-2019-18988

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).

Added to CISA’s Known Exploited Vulnerabilities catalog on 2021-11-03. Required action per CISA: Apply updates per vendor instructions. Due date: 2022-05-03.

This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.