๐Ÿ” CVE Alert

CVE-2026-73064

LOW 2.9
CVSS Score
2.9
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-394
Vendor trustedfirmware
Product mbed tls
Published Sep 24, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Affected Versions

trustedfirmware / Mbed TLS
3.2.0 < 3.6.7 4.0.0 < 4.1.1

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
github.com: https://github.com/Mbed-TLS/mbedtls mbed-tls.readthedocs.io: https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-07-random-generator-fault-tls-integrity/