CVE-2020-8437

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

The bencoding parser in BitTorrent uTorrent through 3.5.5 (build 45505) misparses nested bencoded dictionaries, which allows a remote attacker to cause a denial of service.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.htmlExploit, Third Party Advisory
https://forum.utorrent.com/forum/13-announcements/Vendor Advisory
https://twitter.com/va_startThird Party Advisory
https://utclient.utorrent.com/offers/beta_release_notes/release_notes.htmlRelease Notes, Vendor Advisory
https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.htmlExploit, Third Party Advisory
https://forum.utorrent.com/forum/13-announcements/Vendor Advisory
https://twitter.com/va_startThird Party Advisory
https://utclient.utorrent.com/offers/beta_release_notes/release_notes.htmlRelease Notes, Vendor Advisory

Timeline

Published: Mar 2, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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