CVE-2020-13699
A malicious website could launch TeamViewer with arbitrary parameters, as demonstrated by a teamviewer10: --play URL.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 25.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
TeamViewer Desktop for Windows before 15.8.3 does not properly quote its custom URI handlers. A malicious website could launch TeamViewer with arbitrary parameters, as demonstrated by a teamviewer10: --play URL. An attacker could force a victim to send an NTLM authentication request and either relay the request or capture the hash for offline password cracking. This affects teamviewer10, teamviewer8, teamviewerapi, tvchat1, tvcontrol1, tvfiletransfer1, tvjoinv8, tvpresent1, tvsendfile1, tvsqcustomer1, tvsqsupport1, tvvideocall1, and tvvpn1. The issue is fixed in 8.0.258861, 9.0.258860, 10.0.258873, 11.0.258870, 12.0.258869, 13.2.36220, 14.2.56676, 14.7.48350, and 15.8.3.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 25.79% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-88
- Affected
- teamviewer/teamviewer
- Source
- cve@mitre.org
EPSS 25.8% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://community.teamviewer.com/t5/Announcements/Statement-on-CVE-2020-13699/td-p/98448Vendor Advisory
- https://jeffs.sh/CVEs/CVE-2020-13699.txtThird Party Advisory
- https://community.teamviewer.com/t5/Announcements/Statement-on-CVE-2020-13699/td-p/98448Vendor Advisory
- https://jeffs.sh/CVEs/CVE-2020-13699.txtThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.