CVE-2018-20579

7.1 highEPSS 0.3%

High (7.1) in contiki-ng project contiki-ng. EPSS 0.3% chance of exploitation in the next 30 days.

Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character.

Severity

CVSS 3.0

7.1 high

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2018-12-28
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

contiki-ng_project:contiki-ng

References

https://github.com/contiki-ng/contiki-ng/issues/601
https://github.com/contiki-ng/contiki-ng/issues/601

Check your stack JSON