CVE-2026-20946
HIGH
2026-01-13
[email protected]
7.8
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 13, 2026 - 18:16 nvd
HIGH 7.8
Description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Analysis
Local code execution in Microsoft Office Excel occurs through an out-of-bounds memory read vulnerability affecting the Long Term Servicing Channel, Office 365 Apps, and standalone Office installations. An attacker with local access and user interaction can exploit this flaw to achieve arbitrary code execution with full system privileges. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.
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Priority Score
44
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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