cve.bz

CVE-2021-3321

8.8 highEPSS 0.8%

High (8.8) in zephyrproject zephyr. EPSS 0.8% chance of exploitation in the next 30 days.

Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal. Zephyr versions >= >=2.4.0 contain Integer Overflow to Buffer Overflow (CWE-680). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99

Severity

CVSS 3.1

8.8 high
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)
CWEs
CWE-191, CWE-680
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON