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CVE-2026-64918medium6.5

Microsoft Office Spoofing Vulnerability

Impact

Microsoft Office 365 Apps for Enterprise version 16.0.1 has insufficiently protected credentials, allowing an attacker to perform spoofing over a network. The vulnerability requires an attacker to have network access. The impact is spoofing.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Microsoft · microsoft

Microsoft 365 Apps for Enterprise

1 range
microsoft version evidence
Platforms: 32-bit Systems, x64-based Systems

Compare with this publisher’s ranges. This does not inspect your installation.

affected

16.0.1 → before https://aka.ms/OfficeSecurityReleases

custom versions

unaffected

unknown

Other versions: unknown

Original source description

Insufficiently protected credentials in Microsoft Office allows an unauthorized attacker to perform spoofing over a network.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-64918

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-522 ↗

CWE-522: Insufficiently Protected Credentials

microsoft

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

microsoft · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*

From (inclusive): 16.0.1

Before: https://aka.ms/OfficeSecurityReleases

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*",
            "versionStartIncluding": "16.0.1",
            "versionEndExcluding": "https://aka.ms/OfficeSecurityReleases"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
microsoft

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-09-09

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

1 sources
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64918
vendor-advisorymicrosoft