mruby up to 3.4.0 src/array.c sort_cmp use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.38

Summaryinfo

A vulnerability was found in mruby up to 3.4.0. It has been rated as critical. This issue affects the function sort_cmp of the file src/array.c. Performing a manipulation results in use after free. This vulnerability is known as CVE-2025-13120. Attacking locally is a requirement. Furthermore, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in mruby up to 3.4.0. This affects the function sort_cmp of the file src/array.c. 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 confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-13120. The exploitability is told to be easy. An attack has to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

Applying the patch eb398971bfb43c38db3e04528b68ac9a7ce509bc is able to eliminate this problem. The bugfix is ready for download at github.com.

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

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

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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: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: eb398971bfb43c38db3e04528b68ac9a7ce509bc

Timelineinfo

11/13/2025 Advisory disclosed
11/13/2025 +0 days VulDB entry created
12/05/2025 +22 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 6649
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-13120 (🔒)
GCVE (CVE): GCVE-0-2025-13120
GCVE (VulDB): GCVE-100-332325
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/13/2025 10:12
Updated: 12/05/2025 15:17
Changes: 11/13/2025 10:12 (60), 11/14/2025 03:10 (30), 12/05/2025 15:17 (11)
Complete: 🔍
Submitter: tjbecker
Cache ID: 216:1E2:103

Submitinfo

Accepted

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

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