Local Execution Vulnerability in mxml Product by Michaelrsweet
CVE-2026-5037

4.8MEDIUM

Key Information:

Vendor

Michaelrsweet

Status
Mxml
Vendor
CVE Published:
29 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5037?

A vulnerability exists in mxml versions up to 4.0.4, specifically in the function index_sort located in the mxml-index.c file of the mxmlIndexNew component. By manipulating the argument 'tempr', an attacker can trigger a stack-based buffer overflow, allowing for potential local exploitation. While the issue is restricted to local execution, the exploit has been publicly disclosed, increasing the need for vigilant patch application. Users are advised to implement the available patch (commit 6e27354466092a1ac65601e01ce6708710bb9fa5) to mitigate the risks associated with this vulnerability.

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Affected Version(s)

mxml 4.0.0

mxml 4.0.1

mxml 4.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-5037 - Proof of Concept

References

https://vuldb.com/vuln/353963
vdb-entrytechnical-description
https://vuldb.com/vuln/353963/cti
signaturepermissions-required
https://vuldb.com/submit/778638
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

MTHG (VulDB User)
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