Mini-XML 4.0.0 through 4.0.6 contains an off-by-one stack out-of-bounds write in mxml_strtod() when the locale decimal point is not '.'. Attackers can supply XML with a 63-digit REAL value followed by '.' to write a NUL byte past the 64-byte stack buffer, corrupting stack memory or crashing the process.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Michael R Sweet Mini-XML unaffected
Version Status Constraints
4.0.0 affected ≤ 4.0.6

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Project Subscriptions

Vendors Products
Mini-xml Project Subscribe
Mini-xml Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/michaelrsweet/mxml/blob/v4.0.6/mxml-file.c#L1860-L1887 cve-icon cve-icon
https://github.com/michaelrsweet/mxml/commit/367c7ddd3387f65e867d776216de274bcaa3dae1 cve-icon cve-icon
https://hackmd.io/@haind-pwn/cve-2026-110604-mxml-strtod-locale-stack-overflow cve-icon cve-icon
https://hackmd.io/@haind-pwn/mxml-strtod-locale-stack-overflow cve-icon cve-icon
https://www.vulncheck.com/advisories/mini-xml-4.0.0-through-4.0.6-stack-out-of-bounds-write-via-mxml-strtod cve-icon cve-icon
History

Wed, 14 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 14 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Description Mini-XML 4.0.0 through 4.0.6 contains an off-by-one stack out-of-bounds write in mxml_strtod() when the locale decimal point is not '.'. Attackers can supply XML with a 63-digit REAL value followed by '.' to write a NUL byte past the 64-byte stack buffer, corrupting stack memory or crashing the process.
Title Mini-XML 4.0.0 through 4.0.6 Stack Out-of-Bounds Write via mxml_strtod()
First Time appeared Mini-xml Project
Mini-xml Project mini-xml
Weaknesses CWE-193
CPEs cpe:2.3:a:mini-xml_project:mini-xml:*:*:*:*:*:*:*:*
Vendors & Products Mini-xml Project
Mini-xml Project mini-xml
References
Metrics cvssV3_1

{'score': 3.6, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L'}

cvssV4_0

{'score': 2, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-14T16:19:42.263Z

Reserved: 2026-10-14T13:07:21.573Z

Link: CVE-2026-110604

cve-icon Vulnrichment

Updated: 2026-10-14T16:19:35.424Z

cve-icon NVD

Status : Deferred

Published: 2026-10-14T15:17:11.967

Modified: 2026-10-14T17:18:25.567

Link: CVE-2026-110604

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses