monkey f37e984 HTTP Request mk_core/mk_string.c mk_string_char_search use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in monkey f37e984 and classified as problematic. The affected element is the function mk_string_char_search of the file mk_core/mk_string.c of the component HTTP Request Handler. Performing a manipulation results in use after free. This vulnerability is reported as CVE-2025-63651. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in monkey f37e984. It has been classified as problematic. This affects the function mk_string_char_search of the file mk_core/mk_string.c of the component HTTP Request Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability. The summary by CVE is:

A use-after-free in the mk_string_char_search function (mk_core/mk_string.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 at github.com. This vulnerability is uniquely identified as CVE-2025-63651 since 10/27/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/19/2026).

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-2025-206528). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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
02/19/2026 +20 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 426
Status: Confirmed

CVE: CVE-2025-63651 (🔒)
GCVE (CVE): GCVE-0-2025-63651
GCVE (VulDB): GCVE-100-343437
EUVD: 🔒

Entryinfo

Created: 01/30/2026 07:57
Updated: 02/19/2026 22:54
Changes: 01/30/2026 07:57 (55), 01/30/2026 14:29 (1), 02/19/2026 22:54 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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