AUGUST 4, 2026
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Case File

CVE-2021-4209

MEDIUM · CVSS 6.5 EPSS 1.39%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-08-24 · Last synced 2026-08-04

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CVE
CVE-2021-4209
Severity
MEDIUM
CVSS
6.5
EPSS
1.39%

Original NVD Description

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

Related CVEs

Other vulnerabilities affecting the same vendor(s)