High severity7.8NVD Advisory· Published Jun 9, 2026· Updated Jun 9, 2026
CVE-2026-45469
CVE-2026-45469
Description
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
3- Microsoft June 2026 Patch Tuesday fixes 3 zero-day, 200 flawsBleepingComputer · Jun 9, 2026
- Microsoft Patch Tuesday June 2026 – 198 Vulnerabilities Fixed, Including 3 Zero-daysCyber Security News · Jun 9, 2026
- Microsoft Office Excel: Eight Vulnerabilities Disclosed on June 9, 2026Vypr Intelligence · Jun 9, 2026