Vulnerability-Lookup

CNVD-2026-29409

Vulnerability from cnvd - Published: 2026-07-29

Title

Microsoft Office Word缓冲区溢出漏洞（CNVD-2026-29409）

Description

Microsoft Office Word是Microsoft Office套件中的一个文字处理应用程序，主要提供文档编辑、格式设置和排版功能。 Microsoft Office Word存在堆缓冲区溢出漏洞。该漏洞源于程序未能正确验证用户输入的数据导致堆内存写入越界，攻击者可利用该漏洞在本地执行任意代码。

Severity

高

Patch Name

Microsoft Office Word缓冲区溢出漏洞（CNVD-2026-29409）的补丁

Patch Description

Microsoft Office Word是Microsoft Office套件中的一个文字处理应用程序，主要提供文档编辑、格式设置和排版功能。 Microsoft Office Word存在堆缓冲区溢出漏洞。该漏洞源于程序未能正确验证用户输入的数据导致堆内存写入越界，攻击者可利用该漏洞在本地执行任意代码。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55130

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-55130

Impacted products

Name
['Microsoft Microsoft SharePoint Server 2019', 'Microsoft Microsoft SharePoint Enterprise Server 2016', 'Microsoft Microsoft SharePoint Server Subscription Edition', 'Microsoft Microsoft 365 Apps for Enterprise', 'Microsoft Microsoft Word 2016', 'Microsoft Microsoft Office LTSC 2021', 'Microsoft Microsoft Office 2019', 'Microsoft Microsoft Office LTSC 2024']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-55130",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-55130"
    }
  },
  "description": "Microsoft Office Word\u662fMicrosoft Office\u5957\u4ef6\u4e2d\u7684\u4e00\u4e2a\u6587\u5b57\u5904\u7406\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e3b\u8981\u63d0\u4f9b\u6587\u6863\u7f16\u8f91\u3001\u683c\u5f0f\u8bbe\u7f6e\u548c\u6392\u7248\u529f\u80fd\u3002\n\nMicrosoft Office Word\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\u5bfc\u81f4\u5806\u5185\u5b58\u5199\u5165\u8d8a\u754c\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u672c\u5730\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55130",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-29409",
  "openTime": "2026-07-29",
  "patchDescription": "Microsoft Office Word\u662fMicrosoft Office\u5957\u4ef6\u4e2d\u7684\u4e00\u4e2a\u6587\u5b57\u5904\u7406\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e3b\u8981\u63d0\u4f9b\u6587\u6863\u7f16\u8f91\u3001\u683c\u5f0f\u8bbe\u7f6e\u548c\u6392\u7248\u529f\u80fd\u3002\r\n\r\nMicrosoft Office Word\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\u5bfc\u81f4\u5806\u5185\u5b58\u5199\u5165\u8d8a\u754c\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u672c\u5730\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Microsoft Office Word\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2026-29409\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Microsoft Microsoft SharePoint Server 2019",
      "Microsoft Microsoft SharePoint Enterprise Server 2016",
      "Microsoft Microsoft SharePoint Server Subscription Edition",
      "Microsoft Microsoft 365 Apps for Enterprise",
      "Microsoft Microsoft Word 2016",
      "Microsoft Microsoft Office LTSC 2021",
      "Microsoft Microsoft Office 2019",
      "Microsoft Microsoft Office LTSC 2024"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-55130",
  "serverity": "\u9ad8",
  "submitTime": "2026-07-15",
  "title": "Microsoft Office Word\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2026-29409\uff09"
}

CVE-2026-55130 (GCVE-0-2026-55130)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:09 – Updated: 2026-08-03 22:57

Title

Microsoft Word Remote Code Execution Vulnerability

Summary

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

microsoft

References

1 reference

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisorypatch

Impacted products

8 products

Vendor	Product	Version
Microsoft	Microsoft 365 Apps for Enterprise	Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Microsoft	Microsoft Office 2019	Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Microsoft	Microsoft Office LTSC 2021	Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Microsoft	Microsoft Office LTSC 2024	Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Microsoft	Microsoft SharePoint Enterprise Server 2016	Affected: 16.0.0 , < 16.0.5561.1001 (custom)
Microsoft	Microsoft SharePoint Server 2019	Affected: 16.0.0 , < 16.0.10417.20175 (custom)
Microsoft	Microsoft SharePoint Server Subscription Edition	Affected: 16.0.0 , < 16.0.19725.20434 (custom)
Microsoft	Microsoft Word 2016	Affected: 16.0.1 , < 16.0.5561.1000 (custom)

Date Public

2026-07-14 14:00

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CNVD-2026-29409

CVE-2026-55130 (GCVE-0-2026-55130)

Tags

Sightings

Nomenclature