Medium severity6.5NVD Advisory· Published Apr 3, 2024· Updated Jun 5, 2026
CVE-2024-28755
CVE-2024-28755
Description
An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When an SSL context was reset with the mbedtls_ssl_session_reset() API, the maximum TLS version to be negotiated was not restored to the configured one. An attacker was able to prevent an Mbed TLS server from establishing any TLS 1.3 connection, potentially resulting in a Denial of Service or forced version downgrade from TLS 1.3 to TLS 1.2.
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Affected products
3- Mbed TLS/Mbed TLSdescription
Patches
Vulnerability mechanics
References
3- mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/nvdVendor Advisory
- github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0nvdRelease Notes
- hey3e.github.ionvdNot Applicable
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