CVE-2019-18988
mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.047 · 92 %ileexploit · functionalEUUSadded 2021-11-03remediate by 2022-05-03
required action Apply updates per vendor instructions.
EPSS · scored 2026-10-24
TeamViewer Desktop Bypass Remote Login Vulnerability
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.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
No vendor fix yet; a mitigation is available.
- MitigationVBASE Pro-RT/ Server-RT (Web Remote)cisa_csaf_ot
For more information, please contact VISAM using the information provided on the company contact page.
https://www.vbase.net/en/contact.php
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.4–7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (2)
Public proof-of-concept and weaponised exploit code.
- post/windows/gather/credentials/teamviewer_passwordsWindows Gather TeamViewer Passwordsfunctional · metasploit
- mr-r3b00t/CVE-2019-18988TeamViewer Store Credentials DecryptionPoC · poc_in_github
affected products (4)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-21-308-01VISAM VBASE Editor2021-11-04icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities may allow un-neutralized user-controllable data input, disclosure of local files, access to NTLM (Windows New Technology LAN Manager) hashes, and access to sensitive files.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (18)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2019-18988cnnvd
- https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-18988/td-p/82264cnnvd
- https://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?threadtype=label&labels=Securitycnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-18988cnnvd
- https://twitter.com/Blurbdust/status/1224212682594770946?s=20cnnvd
- https://vigilance.fr/vulnerability/TeamViewer-information-disclosure-via-Constant-Key-AES-Encrypted-Password-31515cnnvd
- https://whynotsecurity.com/blog/teamviewer/cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.3693cnnvd
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