AEGLIX vulnerability intelligence
CVE-2019-18988
HIGH · CVSS 7.0 · Analyzed
Published: 2020-02-07 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 7.0 · HIGH
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-521
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- TeamViewer · Desktop
- Added to catalog
- 2021-11-03
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-05-03
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:teamviewer:teamviewer:*:*:*:*:*:*:*:*
Through (inclusive): 14.7.1965
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-18988/td-p/82264
Vendor Advisory
- https://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?threadtype=label&labels=Security
Broken Link · Vendor Advisory
- https://twitter.com/Blurbdust/status/1224212682594770946?s=20
Third Party Advisory
- https://whynotsecurity.com/blog/teamviewer/
Exploit · Third Party Advisory
- https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-18988/td-p/82264
Vendor Advisory
- https://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?threadtype=label&labels=Security
Broken Link · Vendor Advisory
- https://twitter.com/Blurbdust/status/1224212682594770946?s=20
Third Party Advisory
- https://whynotsecurity.com/blog/teamviewer/
Exploit · Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-18988
US Government Resource