Security readout for executives and security teams
CVE-2021-42142 is a high-severity denial-of-service issue in Contiki-NG tinyDTLS servers reported through master branch 53a0d97. A remote unauthenticated attacker can trigger server disruption and false-positive packet drops by abusing early handling of a large DTLS epoch value. Exposure is most likely in embedded, IoT, or constrained-device services that embed Contiki-NG tinyDTLS server code through the referenced master branch. The supplied sources do not identify specific downstream products, CPEs, firmware images, or fixed release versions. Prioritize assessment for externally reachable embedded or IoT DTLS services because exploitation requires no authentication and primarily threatens availability. Business urgency depends on whether tinyDTLS is present in production devices and whether those services support safety, access, monitoring, or customer-facing operations. Mitigation focus: Inventory firmware and services that embed Contiki-NG tinyDTLS server code.; Check Contiki-NG tinyDTLS and vendor advisories for fixed versions or workarounds.; Prioritize updates where DTLS services are reachable from untrusted networks..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2021-42142 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H3.94.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/contiki-ng/tinydtls/issues/24CVE reference
- https://seclists.org/fulldisclosure/2024/Jan/15CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Allocation of Resources Without Limits or Throttling
Allocation of Resources Without Limits or Throttling represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.