CVE-2026-26107
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2Tags
Description
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Analysis
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]
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Remediation
Within 24 hours: Inventory all Excel deployments and identify high-risk user populations (finance, legal, external-facing roles). Within 7 days: Implement compensating controls (disable macros, restrict file types, deploy application whitelisting) and communicate risks to users. …
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External POC / Exploit Code
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