CVE-2021-20232 (GCVE-0-2021-20232)

Vulnerability from cvelistv5 – Published: 2021-03-12 18:25 – Updated: 2026-10-14 10:04
VLAI
Summary
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-03 15:03 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 1011 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
n/a gnutls Affected: gnutls 3.7.1
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
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