CVE-2020-12140

8.8 highEPSS 0.9%

High (8.8) in contiki-ng contiki-ng. EPSS 0.9% chance of exploitation in the next 30 days.

A buffer overflow in os/net/mac/ble/ble-l2cap.c in the BLE stack in Contiki-NG 4.4 and earlier allows an attacker to execute arbitrary code via malicious L2CAP frames.

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: 0.9% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2021-12-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

contiki-ng:contiki-ng

References

https://github.com/contiki-ng/contiki-ng/pull/1662
https://twitter.com/ScepticCtf
https://github.com/contiki-ng/contiki-ng/pull/1662
https://twitter.com/ScepticCtf

Check your stack JSON