monkey f37e984 HTTP Request mk_server/mk_vhost.c mk_vhost_fdt_close out-of-bounds
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.4 | $0-$5k | 0.00 |
Summary
A vulnerability was found in monkey f37e984. It has been classified as problematic. This affects the function mk_vhost_fdt_close of the file mk_server/mk_vhost.c of the component HTTP Request Handler. The manipulation leads to out-of-bounds.
This vulnerability is traded as CVE-2025-63653. It is possible to initiate the attack remotely. There is no exploit available.
Details
A vulnerability was found in monkey f37e984. It has been rated as problematic. This issue affects the function mk_vhost_fdt_close of the file mk_server/mk_vhost.c of the component HTTP Request Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. The summary by CVE is:
An out-of-bounds read in the mk_vhost_fdt_close function (mk_server/mk_vhost.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (DoS) via sending a crafted HTTP request to the server.
It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-63653 since 10/27/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-206526). Be aware that VulDB is the high quality source for vulnerability data.
Product
Name
Version
Website
- Product: https://github.com/monkey/monkey/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.4VulDB Meta Temp Score: 6.4
VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍
ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Out-of-boundsCWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
10/27/2025 CVE reserved01/30/2026 Advisory disclosed
01/30/2026 VulDB entry created
02/14/2026 VulDB entry last update
Sources
Product: github.comAdvisory: 426
Status: Confirmed
CVE: CVE-2025-63653 (🔒)
GCVE (CVE): GCVE-0-2025-63653
GCVE (VulDB): GCVE-100-343439
EUVD: 🔒
Entry
Created: 01/30/2026 07:58Updated: 02/14/2026 02:59
Changes: 01/30/2026 07:58 (55), 01/30/2026 14:29 (1), 02/14/2026 02:59 (11)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.
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