CVE-2019-18988

KEV
Published: Feb 07, 2020 Last Modified: Nov 07, 2025
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,0
Attack Vector: local
Attack Complexity: high
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
MEDIUM 4,4
Access Vector: local
Access Complexity: medium
Authentication: none
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the current version of the product. If an attacker were to know this key, they could decrypt protect information stored in the registry or configuration files of TeamViewer. With versions before v9.x , this allowed for attackers to decrypt the Unattended Access password to the system (which allows for remote login to the system as well as headless file browsing). The latest version still uses the same key for OptionPasswordAES but appears to have changed how the Unattended Access password is stored. While in most cases an attacker requires an existing session on a system, if the registry/configuration keys were stored off of the machine (such as in a file share or online), an attacker could then decrypt the required password to login to the system.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,1041
Percentile
0,9th
Updated

EPSS Score Trend (Last 90 Days)

521

Weak Password Requirements

Draft
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
View CWE Details
Application

Teamviewer by Teamviewer

Version Range Affected
To 14.7.1965 (inclusive)
cpe:2.3:a:teamviewer:teamviewer:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019…
https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-189…
https://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?threadty…
https://twitter.com/Blurbdust/status/1224212682594770946?s=20
https://whynotsecurity.com/blog/teamviewer/
https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-189…
https://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?threadty…
https://twitter.com/Blurbdust/status/1224212682594770946?s=20
https://whynotsecurity.com/blog/teamviewer/