CVE-2021-42142 describes a critical denial-of-service vulnerability in Contiki-NG tinyDTLS, specifically affecting versions up to master branch 53a0d97. This flaw allows remote attackers to disrupt DTLS server operations and cause false-positive packet drops by exploiting the server's mishandling of early use of large epoch numbers. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. While there is no known active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness within the cybersecurity community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2018-08-30CPE matchmatch criteria | cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.