CVE-2021-42147

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-01-24 · updated 2026-06-17
Weakness: CWE-125

Description

Buffer over-read vulnerability in the dtls_sha256_update function in Contiki-NG tinyDTLS through master branch 53a0d97 allows remote attackers to cause a denial of service via crafted data packet.

Affected products

contiki-ng Tinydtls: 2018-08-30

References

https://seclists.org/fulldisclosure/2024/Jan/20
http://seclists.org/fulldisclosure/2024/Jan/20
https://seclists.org/fulldisclosure/2024/Jan/20

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