CISA KEV entry
CVE-2019-18988TeamViewer Desktop Bypass Remote Login Vulnerability
TeamViewer Desktop. Added to the CISA Known Exploited Vulnerabilities catalogue on 3 November 2021.
Data status: a source is stale
Last synced CISA catalogue version 2026.11.04 (released 4 November 2026) 1,768 entries Updated manually
- Date added
- 2021-11-03
- Federal due date
- 2022-05-03 181 days after it was added; passed at the sync of 2026-11-05
- Known ransomware use
- Unknown
- Forensic triage (BOD 26-04)
- No
- CVSS
- 7.0 High CVSS 3.1, scored by nvd@nist.gov
- EPSS
- 4.70% percentile 91.8, scored 2026-11-04
- CISA SSVC
- Exploitation active, automatable no, technical impact partial
- NVD status
- Analyzed published 2020-02-07, 635 days before the KEV listing
BOD 26-04 remediation window
With CISA's SSVC answers for this CVE (automatable: no, technical impact: partial), BOD 26-04 Table 1 gives 14 days on a publicly exposed asset (row 4) and 14 days on an asset that is not publicly exposed (row 12) S06. The catalogue due date, 181 days after the date added, was set before BOD 26-04 took effect on 10 June 2026 S06. The directive binds US federal civilian executive branch agencies only.
What CISA says
Short description
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).
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-18988
CWE in the catalogue
CWE-521
Official links
- CISA KEV catalogue entry cisa.gov
- NVD record nvd.nist.gov
Vendor advisory and patch links
References NVD tags Vendor Advisory or Patch, exactly as NVD lists them.
- 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; NVD marks this link broken
Links in CISA's notes
NVD details
- CWE (NVD)
- CWE-521 by nvd@nist.gov
- CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H- CVSS versions in NVD
- V2, V31
- Last modified in NVD
- 2026-06-17T02:25:42.777
Where each value comes from
| Field | Source | Fetched, UTC | State |
|---|---|---|---|
| Catalogue fields | CISA KEV JSON, version 2026.11.04 | 2026-11-05 11:38 | current |
| NVD published, status, CVSS, CWE, vendor links | NVD CVE API 2.0; CVSS: NVD (nvd@nist.gov) | 2026-11-03 12:37 | current at 2026-11-05 11:38 |
| EPSS | FIRST EPSS API, scores of 2026-11-04 | 2026-11-05 11:38 | current |
| CISA SSVC | CISA ADP (via NVD), record of 2025-02-04 | 2026-11-03 12:37 | current |
This product uses data from the NVD API but is not endorsed or certified by the NVD. CISA does not endorse Sysprobs. Methodology.