CVE-2026-55054
Microsoft Excel Information Disclosure vulnerability
MSRC advisory July 14, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-55054
- Affected products
- Microsoft Excel Information Disclosure · Microsoft Microsoft Excel Information Disclosure · Microsoft
What happened
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
What it means for your business
Microsoft Excel Information Disclosure vulnerability (CVE-2026-55054) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. If you need help checking exposure, call (864) 335-9223.
Sources
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