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-$5k0.00

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. The vulnerability scanner Nessus provides a plugin with the ID 304249 (Linux Distros Unpatched Vulnerability : CVE-2026-5037), which helps to determine the existence of the flaw in a target environment.

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 databases at Tenable (304249) and EUVD (EUVD-2026-16983). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 304249
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-5037

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
03/30/2026 +3 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: 03/30/2026 12:37
Changes: 03/27/2026 17:28 (61), 03/29/2026 13:30 (1), 03/30/2026 12:37 (2)
Complete: 🔍
Submitter: MTHG
Cache ID: 216::103

Submitinfo

Accepted

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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