AUGUST 4, 2026
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Case File

CVE-2021-3672

MEDIUM · CVSS 5.6 EPSS 2.60%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-23 · Last synced 2026-08-04

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CVE
CVE-2021-3672
Severity
MEDIUM
CVSS
5.6
EPSS
2.60%

Original NVD Description

A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.

Related CVEs

Other vulnerabilities affecting the same vendor(s)