CVE-2026-73064CWE-394

CVE-2026-73064

Low · published September 24, 2026

CVSS v3.1
2.9
EPSS
0%
Percentile
0.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.9 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00102 · 0.9th percentile
Weakness
CWE-394 · Unexpected Status Code or Return Value
Published
2026-09-24T19:17Z
References (2)
https://github.com/Mbed-TLS/mbedtls · [email protected]https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-07-random-generator-fault-tls-integrity/ · [email protected]
EPSS history
Timeline
  • 26 SEP 03:26Z
    EPSS moved — → 0%
    epss
  • 24 SEP 14:58Z
    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…
    cvelistv5