{"id":"CVE-2020-13699","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-13699","generatedAt":"2026-11-05T02:01:01.923Z","title":"A malicious website could launch TeamViewer with arbitrary parameters, as demonstrated by a teamviewer10: --play URL.","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.","published":"2020-07-29T16:15:12.000Z","lastModified":"2026-06-17T02:53:35.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-88"],"affected":["teamviewer/teamviewer"],"epss":{"score":0.25789,"percentile":0.97976,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"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."},"changes":[],"references":[{"url":"https://community.teamviewer.com/t5/Announcements/Statement-on-CVE-2020-13699/td-p/98448","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://jeffs.sh/CVEs/CVE-2020-13699.txt","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://community.teamviewer.com/t5/Announcements/Statement-on-CVE-2020-13699/td-p/98448","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://jeffs.sh/CVEs/CVE-2020-13699.txt","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-13699","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}