Vulnerability-Lookup

MSRC_CVE-2025-53739

Vulnerability from csaf_microsoft - Published: 2025-08-12 07:00 - Updated: 2025-10-16 07:00

Summary

Microsoft Excel Remote Code Execution Vulnerability

Severity

Important

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.

CVE-2025-53739

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

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Affected products

Fixed 13 products

Product	Identifier	Version	Remediation
Microsoft Excel 2016 (32-bit edition) 16.0.5513.1000 Microsoft Excel 2016 (32-bit edition)		16.0.5513.1000
Microsoft Excel 2016 (64-bit edition) 16.0.5513.1000 Microsoft Excel 2016 (64-bit edition)		16.0.5513.1000
Office Online Server 16.0.10417.20034 Office Online Server		16.0.10417.20034
Microsoft Office 2019 for 32-bit editions https://aka.ms/OfficeSecurityReleases Microsoft Office 2019 for 32-bit editions		https://aka.ms/OfficeSecurityReleases
Microsoft Office 2019 for 64-bit editions https://aka.ms/OfficeSecurityReleases Microsoft Office 2019 for 64-bit editions		https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps for Enterprise for 32-bit Systems https://aka.ms/OfficeSecurityReleases Microsoft 365 Apps for Enterprise for 32-bit Systems		https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps for Enterprise for 64-bit Systems https://aka.ms/OfficeSecurityReleases Microsoft 365 Apps for Enterprise for 64-bit Systems		https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC for Mac 2021 16.100.25081015 Microsoft Office LTSC for Mac 2021		16.100.25081015
Microsoft Office LTSC 2021 for 64-bit editions https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2021 for 64-bit editions		https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021 for 32-bit editions https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2021 for 32-bit editions		https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2024 for 32-bit editions https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2024 for 32-bit editions		https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2024 for 64-bit editions https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2024 for 64-bit editions		https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC for Mac 2024 16.100.25081015 Microsoft Office LTSC for Mac 2024		16.100.25081015

Known affected 13 products

Product	Version	Remediation
Microsoft Office LTSC for Mac 2024 <16.100.25081015 Microsoft Office LTSC for Mac 2024	<16.100.25081015	Vendor Fix fix
Microsoft Office LTSC 2024 for 64-bit editions <https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2024 for 64-bit editions	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Microsoft Office LTSC 2024 for 32-bit editions <https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2024 for 32-bit editions	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Microsoft Office LTSC 2021 for 32-bit editions <https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2021 for 32-bit editions	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Microsoft Office LTSC 2021 for 64-bit editions <https://aka.ms/OfficeSecurityReleases Microsoft Office LTSC 2021 for 64-bit editions	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Microsoft Office LTSC for Mac 2021 <16.100.25081015 Microsoft Office LTSC for Mac 2021	<16.100.25081015	Vendor Fix fix
Microsoft 365 Apps for Enterprise for 64-bit Systems <https://aka.ms/OfficeSecurityReleases Microsoft 365 Apps for Enterprise for 64-bit Systems	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Microsoft 365 Apps for Enterprise for 32-bit Systems <https://aka.ms/OfficeSecurityReleases Microsoft 365 Apps for Enterprise for 32-bit Systems	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Microsoft Office 2019 for 64-bit editions <https://aka.ms/OfficeSecurityReleases Microsoft Office 2019 for 64-bit editions	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Microsoft Office 2019 for 32-bit editions <https://aka.ms/OfficeSecurityReleases Microsoft Office 2019 for 32-bit editions	<https://aka.ms/OfficeSecurityReleases	Vendor Fix fix
Office Online Server <16.0.10417.20034 Office Online Server	<16.0.10417.20034	Vendor Fix fix
Microsoft Excel 2016 (64-bit edition) <16.0.5513.1000 Microsoft Excel 2016 (64-bit edition)	<16.0.5513.1000	Vendor Fix fix
Microsoft Excel 2016 (32-bit edition) <16.0.5513.1000 Microsoft Excel 2016 (32-bit edition)	<16.0.5513.1000	Vendor Fix fix

Threats

Impact Remote Code Execution

Exploit Status Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely

References

7 references

URL	Category
https://msrc.microsoft.com/update-guide/vulnerabi…	self
https://msrc.microsoft.com/csaf/advisories/2025/m…	self
https://www.microsoft.com/en-us/msrc/exploitabili…	external
https://support.microsoft.com/lifecycle	external
https://www.first.org/cvss	external
https://msrc.microsoft.com/update-guide/vulnerabi…	self
https://msrc.microsoft.com/csaf/advisories/2025/m…	self

Acknowledgments

<a href="https://twitter.com/edwardzpeng">wh1tc in Kunlun lab, devoke & Zhiniang Peng</a> with HUST

JSON

To clipboard

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          "title": "According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?"
        },
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          "4",
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          "8",
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          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.8,
            "userInteraction": "REQUIRED",
            "vectorString": "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",
            "version": "3.1"
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            "6",
            "7",
            "8",
            "9",
            "10",
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            "12",
            "13"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft Excel Remote Code Execution Vulnerability"
    }
  ]
}

CVE-2025-53739 (GCVE-0-2025-53739)

Vulnerability from cvelistv5 – Published: 2025-08-12 17:10 – Updated: 2026-02-26 17:49

Title

Microsoft Excel Remote Code Execution Vulnerability

Summary

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel 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 2025-08-13 15:02 UTC

CWE

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Assigner

microsoft CNA under the mitre root

CNA scorecard B 82/100 over 4930 records in the last 180 days details

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 Excel 2016	Affected: 16.0.0.0 , < 16.0.5513.1000 (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 Office LTSC for Mac 2021	Affected: 16.0.1 , < 16.100.25081015 (custom)
Microsoft	Microsoft Office LTSC for Mac 2024	Affected: 16.0.0 , < 16.100.25081015 (custom)
Microsoft	Office Online Server	Affected: 16.0.0.0 , < 16.0.10417.20034 (custom)

Date Public

2025-08-12 07:00

Show details on NVD website

JSON

To clipboard

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                "role": "CISA Coordinator",
                "timestamp": "2025-08-13T15:02:44.677143Z",
                "version": "2.0.3"
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          "value": "Access of resource using incompatible type (\u0027type confusion\u0027) in Microsoft Office Excel allows an unauthorized attacker to execute code locally."
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            "baseSeverity": "HIGH",
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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