What is CVE-2025-63658?

CVE-2025-63658 is a high-severity vulnerability in Monkey-Project Monkey, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-01-29.

How severe is CVE-2025-63658?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Monkey-Project Monkey

CVE-2025-63658

A stack overflow in the mk_http_index_lookup function (mk_server/mk_http.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (DoS) via sending a crafted HTTP request to the server.

Vulnerability class: Buffer Overflow

EPSS: 0.011 (62.6th percentile) — read the EPSS interpretation.

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.

Affected products

Monkey-project Monkey
N/a — versions n/a

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

cve@mitre.org (Exploit, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-63658?: CVE-2025-63658 is a high-severity vulnerability in Monkey-Project Monkey, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-01-29.
How severe is CVE-2025-63658?: High severity. CVSS v3 base score is 7.5 out of 10.