Use of a Broken or Risky Cryptographic Algorithm Affecting mbedtls package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.13% (63rd percentile)

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  • Snyk IDSNYK-UBUNTU1804-MBEDTLS-2325802
  • published21 Mar 2026
  • disclosed21 Dec 2021

Introduced: 21 Dec 2021

CVE-2021-45450  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:18.04 mbedtls.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mbedtls package and not the mbedtls package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.

CVSS Base Scores

version 3.1