CVE-2026-73064

State: Published
Severity: 2.9 Low
Published: Sep 24, 2026
Updated: Sep 24, 2026
Reserved: Aug 10, 2026

Description

In Mbed TLS 3.2.0 though 3.6.6 and 4.0.0 through 4.1.0, an attacker who can cause an entropy source to fail can remove or inject bytes into the start of the TLS stream. This only affects TLS 1.3 servers.

Scores

CVSS	Score	Vector	Source
3.1	2.9 Low	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N	mitre

Weaknesses

CWE-394 Unexpected Status Code or Return Value

Affected Products

Product	Versions
Mbed TLStrustedfirmware	3.2.0 to before 3.6.7Affected 4.0.0 to before 4.1.1Affected

References

https://github.com/Mbed-TLS/mbedtls
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-07-random-generator-fault-tls-integrity/

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