undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields
CVE-2026-16729
Summary
Time-of-check time-of-use (toctou) race condition in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.
Products covered
Microsoft 365 Apps for Enterprise for 64-bit Systems
Microsoft 365 Apps for Enterprise for 32-bit Systems
Remediation
Click to Run
Vendor-listed fixes
https://aka.ms/OfficeSecurityReleases
CVEs in this advisory 1
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.