CVE-2021-23386

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CVSS 3.1

6.5 medium

EPSS

1%p71

Published

May 20, 2021 (May 20, 2021)

Modified

Jun 17, 2026

Description

This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.

Vendors: dns-packet project
Products: dns-packet
Weakness: CWE-909
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.4%)

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