NULL pointer dereference in N/a

CVE-2026-38999

A Null Pointer Dereference in the mk_sched_event_close function (mk_server/mk_scheduler.c) of Monkey through commit 4fb0c16 allows attackers to cause a Denial of Service (DoS) via sending a crafted HTTP request to the server.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (71.4th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-38999: held from 0.014 to 0.013.

EPSS over last 30 days · oldest: 0.014 · newest: 0.013 · change: -0.001

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-38999?
CVE-2026-38999 is a high-severity vulnerability in N/a, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-09-16.
How severe is CVE-2026-38999?
High severity. CVSS v3 base score is 7.5 out of 10.