CVE-2021-3323
moderate-risk
Published 2021-10-12
Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions >= >=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc
Do I need to act?
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0.41% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.3/10
High
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
36
/ 100
moderate-risk
Severity
29/34 · Critical
Exploitability
2/34 · Minimal
Exposure
5/34 · Minimal