CWE-761
Free of Pointer not at Start of Buffer
The product calls free() on a pointer to a memory resource that was allocated on the heap, but the pointer is not at the start of the buffer.
CVE-2025-47749 (GCVE-0-2025-47749)
Vulnerability from cvelistv5 – Published: 2025-05-19 07:43 – Updated: 2025-05-19 15:27
VLAI?
Summary
V-SFT v6.2.5.0 and earlier contains an issue with free of pointer not at start of buffer in VS6EditData.dll!CWinFontInf::WinFontMsgCheck function. Opening specially crafted V7 or V8 files may lead to crash, information disclosure, and arbitrary code execution.
Severity ?
CWE
- CWE-761 - Free of pointer not at start of buffer
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| FUJI ELECTRIC CO., LTD. | V-SFT |
Affected:
v6.2.5.0 and earlier
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-47749",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-19T15:27:37.391930Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-05-19T15:27:49.811Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "V-SFT",
"vendor": "FUJI ELECTRIC CO., LTD.",
"versions": [
{
"status": "affected",
"version": "v6.2.5.0 and earlier"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "V-SFT v6.2.5.0 and earlier contains an issue with free of pointer not at start of buffer in VS6EditData.dll!CWinFontInf::WinFontMsgCheck function. Opening specially crafted V7 or V8 files may lead to crash, information disclosure, and arbitrary code execution."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-761",
"description": "Free of pointer not at start of buffer",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-05-19T07:43:43.944Z",
"orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
"shortName": "jpcert"
},
"references": [
{
"url": "https://monitouch.fujielectric.com/site/download-e/09vsft6_inf/Search.php"
},
{
"url": "https://jvn.jp/en/vu/JVNVU97228144/"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
"assignerShortName": "jpcert",
"cveId": "CVE-2025-47749",
"datePublished": "2025-05-19T07:43:43.944Z",
"dateReserved": "2025-05-09T08:06:34.548Z",
"dateUpdated": "2025-05-19T15:27:49.811Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Mitigation
Phase: Implementation
Description:
- When utilizing pointer arithmetic to traverse a buffer, use a separate variable to track progress through memory and preserve the originally allocated address for later freeing.
Mitigation
Phase: Implementation
Description:
- When programming in C++, consider using smart pointers provided by the boost library to help correctly and consistently manage memory.
Mitigation ID: MIT-4.6
Phase: Architecture and Design
Strategy: Libraries or Frameworks
Description:
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, glibc in Linux provides protection against free of invalid pointers.
Mitigation
Phase: Architecture and Design
Description:
- Use a language that provides abstractions for memory allocation and deallocation.
Mitigation
Phase: Testing
Description:
- Use a tool that dynamically detects memory management problems, such as valgrind.
No CAPEC attack patterns related to this CWE.