CVE-2021-23017

HighCVSS 7.7/10Last modified Jun 17, 2026

Description

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.

Metrics

CVSS 3.1 7.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Weakness enumeration

CWE-193

Affected software

No affected versions have been published.

Timeline

Published: Jun 1, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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