CVE-2023-23396
Microsoft Excel Denial of Service Vulnerability
MEDIUM
6.5
CVSS Score
Published: March 14, 2023 at 04:55 PM UTC
Updated: June 17, 2026 at 05:37 AM UTC
2 products affected across 1 vendorOffice Online ServerOffice Web Apps Server
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Severity
MEDIUM6.5
Exploit prediction
EPSS 4%
SSVC
No known exploit
Description
Microsoft Excel Denial of Service Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
16.0.1 ≤ v < 16.0.10396.2000016.0.1
Affected range stops below 16.0.10396.20000, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.5537.1000, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23396SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.5MEDIUMmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-400
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