Vulnerabilities
Microsoft Office for Mac CVE‑2026‑80091: Information Disclosure Vulnerability Fixed
Microsoft has released security updates for Office for Mac to address CVE‑2026‑80091, an information‑disclosure flaw that could expose sensitive data. Administrators should verify that affected Mac installations are updated; other Office products are unaffected.
What Happened
Microsoft discovered an information‑disclosure flaw in Office for Mac, identified as CVE‑2026‑80091. The vulnerability allows an attacker to read sensitive data from a compromised system.
Impact
Only Office for Mac installations are affected. Other Office products (Windows, web, mobile) are not impacted.
Mitigation
- Check the Office version on all Mac hosts.
- Download and install the latest Office for Mac update from Microsoft.
- Verify that the update includes the CVE‑2026‑80091 fix.
Verification
After applying the update, run a quick version check: open Office, select About, and confirm the build number matches the latest release. No further action is required for non‑Mac Office deployments.
Related vulnerabilities
Microsoft Office for Mac Vulnerability CVE-2026-80082 – Information Disclosure
Microsoft Office for Mac is affected by CVE-2026-80082, an information‑disclosure flaw that can expose user data. The issue is fixed in the latest Office update; administrators should deploy the patch immediately. Non‑Mac Office users are not impacted.
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Microsoft Office for Mac: CVE-2026-80090 Information Disclosure Vulnerability Fixed
Microsoft released patches for Office for Mac to fix CVE-2026-80090, an information‑disclosure flaw in Word. Mac users of affected Office versions must update immediately; other Office platforms are not impacted.
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Microsoft Office for Mac Update Addresses CVE-2026-88169 Information Disclosure
Microsoft released a patch for Office for Mac to fix an information disclosure flaw (CVE‑2026‑88169). Only Mac users of affected Office versions need to apply the update; other platforms are unaffected.
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Microsoft Office for Mac CVE-2026-80089: Information Disclosure – Update Required
A recent vulnerability (CVE-2026-80089) allows information disclosure in Microsoft Office for Mac. Users of the affected Mac version must install the security update immediately. Other Office products are not impacted.
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