Buffer over-read vulnerability in Contiki-NG tinyDTLS through master branch 53a0d97 allows attackers obtain sensitive information via crafted input to dtls_ccm_decrypt_message().

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00095.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Contiki-ng
  • Contiki-ng Tinydtls

Configuration 1 [-]

cpe:2.3:o:contiki-ng:contiki-ng_tinydtls:*:*:*:*:*:*:*:*

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://seclists.org/fulldisclosure/2024/Jan/17 cve-icon
https://seclists.org/fulldisclosure/2024/Jan/17 cve-icon cve-icon
History

Fri, 20 Jun 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

 ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Fri, 22 Nov 2024 12:00:00 +0000

Type Values Removed Values Added
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-06-20T19:16:51.596Z

Reserved: 2021-10-11T00:00:00.000Z

Link: CVE-2021-42144

cve-icon Vulnrichment

Updated: 2024-08-04T03:30:37.560Z

cve-icon NVD

Status : Modified

Published: 2024-01-24T18:15:08.150

Modified: 2025-06-20T20:15:22.800

Link: CVE-2021-42144

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.