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High severity8.6NVD Advisory· Published Jun 18, 2021· Updated Jun 17, 2026

CVE-2021-21280

CVE-2021-21280

Description

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Xwiki Contrib/Contiki Ng.2 versions
    cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*range: <4.6
    • (no CPE)range: < 4.6
  • Contiki OS/Contikillm-fuzzy
    Range: <4.6

Patches

Vulnerability mechanics

References

2

News mentions

0

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