PT-2026-5338 · Monkey · Monkeyd

Published 2026-01-29 · Updated 2026-02-19 · CVE-2025-63651

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Monkey versions prior to commit f37e984

Description A use-after-free issue exists in the mk string char search function located in mk core/mk string.c. This allows attackers to cause a Denial of Service (DoS) by sending a crafted HTTP request to the server. The vulnerable function is mk string char search().

Recommendations Update to commit f37e984 or a later version to address this issue.

Exploit

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

AZL-76457

AZL-76536

CVE-2025-63651

Affected Products

Monkeyd

References · 10

• 🔥 https://github.com/monkey/monkey/issues/426 · Exploit
• 🔥 https://github.com/archersec/security-advisories/blob/master/monkey/monkey-advisory-2025.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-63651 · Security Note
• https://osv.dev/vulnerability/AZL-76536 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-76457 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-63651 · Vendor Advisory
• https://twitter.com/CVEnew/status/2016970903360274724 · Twitter Post
• https://t.me/cveNotify/150763 · Telegram Post
• https://t.me/cveNotify/152516 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2016998813441957901 · Twitter Post