Advisories
Microsoft Office for Mac Update Required for CVE‑2026‑78515 Information Disclosure
A macOS‑specific Excel flaw (CVE‑2026‑78515) can leak sensitive data. Only Office for Mac users need to apply the patch; other Office products remain unaffected.
What happened
A flaw in Microsoft Office Excel on macOS allows an attacker to read sensitive data from a victim’s system. The vulnerability is identified as CVE‑2026‑78515.
Impact
- Only Microsoft Office for Mac is affected; other Office products are not impacted.
- Potential exposure of confidential information through information disclosure.
What to do
Office for Mac users must download and install the latest security update. Non‑Mac Office users can ignore this advisory. After patching, verify installation by checking the Office version number.
Additional info
See release notes for detailed patch information and download links.
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