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Vulnerabilities/CVE-2025-62564Public Intelligence Dossier
Source: microsoft · Limited verification•Last verified: •Collection Degraded
CVE-2025-62564Unknown / EvaluatingHIGH (raw)CVSS 7.8CWE-125

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Published: 09 Dec 2025•Last updated: 15 Oct 2026, 02:40 AM IST•Source identifier: secure@microsoft.com
Dossier completeness: source-provided sections 2 / 3 · rule guidance not available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
7.8HIGH (raw)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Metric sourcesecure@microsoft.com
EPSS probability
0.5%0.005
Percentile43rd
Weakness type
CWE-125
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

SOC priority

High

Actively exploited

Unknown

Publicly disclosed

Unknown

Risk basis: Microsoft or Microsoft-managed product relevance; HIGH severity; No confirmed exploitation signal in current enrichment

Affected Products & Remediation

5 source-backed products
Affected products and versions (source)
  • microsoft 365 apps · version range not provided by source · NVD CPE · Source
  • microsoft excel · 2016 · NVD CPE · Source
  • microsoft office · 2019; long term servicing channel 2021; long term servicing channel 2024; online server < 16.0.10417.20075 · NVD CPE · Source
  • microsoft office long term servicing channel · 2021; 2024 · NVD CPE · Source
  • microsoft office online server · < 16.0.10417.20075 · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

Not provided by source

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

No rule-based guidance for this vulnerability class

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
secure@microsoft.com
Record status · verification
UPDATED · Microsoft primary source linked
CPE
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*, cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*, cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x64:*, cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x86:*, cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*, cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*, cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:*, cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:*, cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*, cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*

Evidence & Provenance

2 public sources
msrc.microsoft.comSource recordnvd.nist.govSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2025-62564
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2025-62564
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2025-62564"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library

Correlated briefings

— No published briefing references this CVE

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.