monkey f37e984 HTTP Request mk_server/mk_http.c mk_http_range_parse null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in monkey f37e984. It has been declared as problematic. This impacts the function mk_http_range_parse of the file mk_server/mk_http.c of the component HTTP Request Handler. The manipulation results in null pointer dereference. This vulnerability is known as CVE-2025-63655. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in monkey f37e984. Affected is the function mk_http_range_parse of the file mk_server/mk_http.c of the component HTTP Request Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

A NULL pointer dereference in the mk_http_range_parse 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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-63655 since 10/27/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

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-2025-206525). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB 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: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/27/2025 CVE reserved
01/30/2026 +95 days Advisory disclosed
01/30/2026 +0 days VulDB entry created
02/14/2026 +15 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 427
Status: Confirmed

CVE: CVE-2025-63655 (🔒)
GCVE (CVE): GCVE-0-2025-63655
GCVE (VulDB): GCVE-100-343440
EUVD: 🔒

Entryinfo

Created: 01/30/2026 07:58
Updated: 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

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