CVE-2021-20231
A flaw was found in gnutls.
Published Mar 12, 2021 · updated Oct 14, 2026 · gnu gnutls
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.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Mar 12, 2021 · NIST NVD
Detected
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.
Oct 14, 2026 · NIST NVD
Updated
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.
Affected
- cpe fedoraproject/fedora34
- cpe gnu/gnutlsversion unspecified
- cpe netapp/active iq unified managerversion unspecified
- cpe netapp/e-series performance analyzerversion unspecified
- cpe redhat/enterprise linux8.0
Sources
- CVE.orgVulnerability recordCVE-2021-20231
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2021-20231
30-day exploitation probability 3.8%
first.org - NIST NVDVulnerability recordCVE-2021-20231
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.
nvd.nist.gov