CVE-2021-28089

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001.

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-400

Affected software

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

References

https://blog.torproject.org/node/2009Release Notes, Vendor Advisory
https://gitlab.torproject.org/tpo/core/tor/-/issues/40304Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/
https://security.gentoo.org/glsa/202107-25Third Party Advisory
https://blog.torproject.org/node/2009Release Notes, Vendor Advisory
https://gitlab.torproject.org/tpo/core/tor/-/issues/40304Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/
https://security.gentoo.org/glsa/202107-25Third Party Advisory

Timeline

Published: Mar 19, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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