Vulnerability-Lookup

CNVD-2026-31550

Vulnerability from cnvd - Published: 2026-08-12

Title

Microsoft Word资源管理错误漏洞（CNVD-2026-31550）

Description

Microsoft Office Word是Microsoft Office套件中的文字处理软件，广泛应用于文档编辑与排版。 Microsoft Office Word存在资源管理错误漏洞，该漏洞源于对象在释放后未能正确处理，攻击者可利用该漏洞在本地系统上执行任意代码。

Severity

高

Patch Name

Microsoft Word资源管理错误漏洞（CNVD-2026-31550）的补丁

Patch Description

Microsoft Office Word是Microsoft Office套件中的文字处理软件，广泛应用于文档编辑与排版。 Microsoft Office Word存在资源管理错误漏洞，该漏洞源于对象在释放后未能正确处理，攻击者可利用该漏洞在本地系统上执行任意代码。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-2026-55032

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-55032

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 for Mac 2021', 'Microsoft Microsoft Office LTSC 2024', 'Microsoft Microsoft Office LTSC for Mac 2024', 'Microsoft Microsoft Office 365 for Mac']

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 for Mac 2021', 'Microsoft Microsoft Office LTSC 2024', 'Microsoft Microsoft Office LTSC for Mac 2024', 'Microsoft Microsoft Office 365 for Mac']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-55032",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-55032"
    }
  },
  "description": "Microsoft Office Word\u662fMicrosoft Office\u5957\u4ef6\u4e2d\u7684\u6587\u5b57\u5904\u7406\u8f6f\u4ef6\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6587\u6863\u7f16\u8f91\u4e0e\u6392\u7248\u3002\n\nMicrosoft Office Word\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9\u8c61\u5728\u91ca\u653e\u540e\u672a\u80fd\u6b63\u786e\u5904\u7406\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u672c\u5730\u7cfb\u7edf\u4e0a\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-2026-55032",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-31550",
  "openTime": "2026-08-12",
  "patchDescription": "Microsoft Office Word\u662fMicrosoft Office\u5957\u4ef6\u4e2d\u7684\u6587\u5b57\u5904\u7406\u8f6f\u4ef6\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6587\u6863\u7f16\u8f91\u4e0e\u6392\u7248\u3002\r\n\r\nMicrosoft Office Word\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9\u8c61\u5728\u91ca\u653e\u540e\u672a\u80fd\u6b63\u786e\u5904\u7406\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u672c\u5730\u7cfb\u7edf\u4e0a\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 Word\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2026-31550\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 for Mac 2021",
      "Microsoft Microsoft Office LTSC 2024",
      "Microsoft Microsoft Office LTSC for Mac 2024",
      "Microsoft Microsoft Office 365 for Mac"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-55032",
  "serverity": "\u9ad8",
  "submitTime": "2026-07-15",
  "title": "Microsoft Word\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2026-31550\uff09"
}

CVE-2026-55032 (GCVE-0-2026-55032)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:08 – Updated: 2026-08-24 21:03

Title

Microsoft Word Remote Code Execution Vulnerability

Summary

Use after free 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 · CISA-ADP (v2.0.3)

Decision recorded 2026-07-15 03:57 UTC

CWE

CWE-416 - Use After Free

Assigner

microsoft mitre root

References

1 reference

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

Impacted products

11 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 365 for Mac	Affected: 1.0.0 , < 16.111.26071215 (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 Office LTSC for Mac 2021	Affected: 16.0.1 , < 16.111.26071215 (custom)
Microsoft	Microsoft Office LTSC for Mac 2024	Affected: 16.0.0 , < 16.111.26071215 (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

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55032",
                "options": [
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                    "Exploitation": "none"
                  },
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                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-15T03:57:07.261596Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        }
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    "datePublished": "2026-07-14T17:08:45.598Z",
    "dateReserved": "2026-06-16T14:12:44.285Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CNVD-2026-31550

CVE-2026-55032 (GCVE-0-2026-55032)

Tags

Sightings

Nomenclature