Security readout for executives and security teams
CVE-2021-42141 is a denial-of-service flaw in Contiki-NG tinyDTLS through 2018-08-30. A malformed DTLS handshake sequence with inconsistent epoch numbers may disrupt availability. The main business concern is outage risk in embedded or IoT systems that rely on this library for secure communications. Exposure is most likely in embedded, IoT, or constrained-device firmware that includes Contiki-NG tinyDTLS through 2018-08-30. The source bundle does not provide complete affected product, CPE, vendor, or downstream firmware information. Treat this as a high-priority availability risk for exposed embedded systems. Prioritize internet-facing or safety-critical deployments first, especially where outages could interrupt operations and vendor patch status is unclear. Mitigation focus: Inventory firmware and applications for Contiki-NG tinyDTLS usage through 2018-08-30.; Check Contiki-NG and device-vendor guidance for fixed versions or supported mitigations.; Reduce internet exposure for affected DTLS services where operationally possible..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupCVE-2021-42141 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/contiki-ng/tinydtls/issues/27CVE reference
- https://seclists.org/fulldisclosure/2024/Jan/14CVE 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.
Improper Handling of Exceptional Conditions
Improper Handling of Exceptional Conditions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.