Frequency
1
occurrences
First Seen
February 18, 2026
Last Seen
February 18, 2026
Related Threat Clusters
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Vulnerabilities Discovered in Mbed TLS Affecting Certificate Validation and Memory Security
Two vulnerabilities were identified in Mbed TLS, affecting versions prior to 2.25.0 and 2.24.0. CVE-2020-36478 allows a NULL algorithm parameters entry to be misinterpreted as valid, while CVE-2020-36476 involves…
9 articles · Updated February 18, 2026
Recent Intelligence Reports
- CVE-2020-36477 An issue was discovered in Mbed TLS before 2.24.0. The verification of X.509 certificates when matching the expected common name (the cn argument of mbedtls_x509_crt_verify) with the actual certificate name is mishandled: when the subjecAltName extension is present, the expected name is compared to any name in that extension regardless of its type. This means that an attacker could impersonate a 4-byte or 16-byte domain by getting a certificate for the corresponding IPv4 or IPv6 address (this would require the attacker to control that IP address, though). — Api.Msrc.Microsoft · February 18, 2026