AUGUST 4, 2026
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Case File

CVE-2021-20231

CRITICAL · CVSS 9.8 EPSS 3.75%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-12 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2021-20231
Severity
CRITICAL
CVSS
9.8
EPSS
3.75%

Original NVD Description

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-59851 HIGH CVE-2026-59850 MEDIUM CVE-2026-59849 LOW CVE-2026-59848 MEDIUM CVE-2026-59847 MEDIUM CVE-2026-59846 LOW