Improper Cross-boundary Removal of Sensitive Data Affecting mbedtls package, versions <2.16.9-0.1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.57% (75th percentile)

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  • Snyk IDSNYK-ECHOLATEST-MBEDTLS-18169624
  • published22 Jul 2026
  • disclosed23 Aug 2021

Introduced: 23 Aug 2021

CVE-2020-36476  (opens in a new tab)
CWE-212  (opens in a new tab)

How to fix?

Upgrade Echo:latest mbedtls to version 2.16.9-0.1 or higher.

NVD Description

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

An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext buffers in mbedtls_ssl_read to erase unused application data from memory.

CVSS Base Scores

version 3.1