VULNERABILITY INTELLIGENCE

CVE-2021-3690

CVSS score7.5 HIGH

EPSS probability1.77%

CISA KEVNot currently listed

Published2022-08-23

Last modified2026-06-17

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

Description

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.

Weakness classification

secalert@redhat.com: CWE-400
nvd@nist.gov: CWE-401

Primary references

secalert@redhat.com — Vendor Advisory
secalert@redhat.com — Issue Tracking, Vendor Advisory
secalert@redhat.com — Patch, Third Party Advisory
secalert@redhat.com — Exploit, Issue Tracking, Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Mitigation, Vendor Advisory