Security readout for executives and security teams
Plain-English summary
RIOT-OS 2021.01 has a reported encryption weakness in its 802.15.4 security component. If attackers can cause device reboots, encryption nonces may be reused, weakening confidentiality. The public bundle does not provide CVSS, affected product metadata beyond RIOT-OS 2021.01, or a named fix.
Executive priority
Inventory and exposure confirmation should be prioritized for IoT or embedded environments using RIOT-OS. Business urgency rises where 802.15.4 traffic protects sensitive operational data or devices are reachable by untrusted radio proximity.
Technical view
CVE-2021-41061 describes nonce reuse in 802.15.4 encryption within the ieee820154_security component of RIOT-OS 2021.01. The reported trigger is device reboot behavior. Nonce reuse can undermine encryption security, but the supplied sources do not document exploit maturity, patch status, or detailed affected configurations.
Likely exposure
Likely exposure is limited to deployments running RIOT-OS 2021.01 with the ieee820154_security component enabled for 802.15.4 encryption. The bundle lists affected vendor and product metadata as n/a, so asset validation is required before estimating scope.
Exploitation context
The source bundle says attackers can break encryption by triggering reboots. It does not cite CISA KEV inclusion, active exploitation, public exploit code, or observed attacks. Treat exploitation evidence as incomplete.
Researcher notes
Evidence is sparse: no CVSS, CWE, CPE, patch, or detailed configuration matrix is supplied. The core issue is cryptographic nonce reuse after reboot-triggered conditions. Avoid asserting active exploitation or broad product impact without additional RIOT-OS confirmation.
Mitigation direction
- Inventory devices running RIOT-OS 2021.01 with 802.15.4 encryption enabled.
- Check RIOT-OS issue 16844 and CVE records for confirmed remediation guidance.
- Prioritize compensating controls around affected wireless deployments until guidance is confirmed.
- Plan firmware updates only from verified RIOT-OS or device-vendor guidance.
Validation and detection
- Confirm whether RIOT-OS 2021.01 is present in firmware or build manifests.
- Determine whether ieee820154_security is compiled and used for 802.15.4 encryption.
- Review reboot behavior and reset sources for affected deployed devices.
- Track the referenced RIOT-OS issue for confirmed affected configurations and fixes.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-41061 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/RIOT-OS/RIOT/issues/16844CVE reference · x_refsource_MISC
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.