CVE-2025-27751
Microsoft Excel Remote Code Execution Vulnerability
HIGH
7.8
CVSS Score
Published: April 8, 2025 at 05:23 PM UTC
Updated: August 10, 2026 at 03:39 PM UTC
8 products affected across 1 vendorOffice365 AppsOffice 2021
Using Office Online Server by Microsoft?
Get instant alerts when new vulnerabilities affect Office Online Server - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 2%
SSVC
No known exploit
Description
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
16.0.1 ≤ v < https://aka.ms/OfficeSecurityReleases16.0.1
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.5495.1000, so it looks safe — our inference, not a vendor statement
19.0.0 ≤ v < https://aka.ms/OfficeSecurityReleases19.0.0
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
16.0.0.0 ≤ v < 16.0.10417.2000316.0.1 ≤ v < 16.96.2504132616.0.1 ≤ v < https://aka.ms/OfficeSecurityReleases16.0.1
Affected range stops below 16.0.10417.20003, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.96.25041326, so it looks safe — our inference, not a vendor statement
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.96.25041326, so it looks safe — our inference, not a vendor statement
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
16.0.0.0 ≤ v < 16.0.10417.2000316.0.0.0
Affected range stops below 16.0.10417.20003, 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-2025-27751SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHmicrosoft
Vector?
Quick Info
StatusANALYZED
CWE
CWE-416
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card