mxml up to 4.0.4 mxmlIndexNew mxml-index.c index_sort tempr stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k1.13

Summaryinfo

A vulnerability, which was classified as problematic, has been found in mxml up to 4.0.4. Impacted is the function index_sort of the file mxml-index.c of the component mxmlIndexNew. The manipulation of the argument tempr leads to stack-based overflow. This vulnerability is listed as CVE-2026-5037. The attack must be carried out locally. In addition, an exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in mxml up to 4.0.4. This issue affects the function index_sort of the file mxml-index.c of the component mxmlIndexNew. The manipulation of the argument tempr with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-5037. The exploitation is known to be easy. Attacking locally is a requirement. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

Applying the patch 6e27354466092a1ac65601e01ce6708710bb9fa5 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-16983). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Programming Language: 🔒
Download: 🔒
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: 6e27354466092a1ac65601e01ce6708710bb9fa5

Timelineinfo

03/27/2026 Advisory disclosed
03/27/2026 +0 days VulDB entry created
03/29/2026 +2 days VulDB entry last update

Sourcesinfo

Advisory: 350
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-5037 (🔒)
GCVE (CVE): GCVE-0-2026-5037
GCVE (VulDB): GCVE-100-353963
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/27/2026 17:28
Updated: 03/29/2026 13:30
Changes: 03/27/2026 17:28 (61), 03/29/2026 13:30 (1)
Complete: 🔍
Submitter: MTHG
Cache ID: 216:B53:103

Submitinfo

Accepted

  • Submit #778638: michaelrsweet mxml 4.0.4 Heap-based Buffer Overflow (by MTHG)

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