High severity7.8NVD Advisory· Published Jun 9, 2026· Updated Jun 9, 2026
CVE-2026-44823
CVE-2026-44823
Description
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
5- Patch Tuesday - June 2026Rapid7 Blog · Jun 9, 2026
- Microsoft June 2026 Patch Tuesday fixes 3 zero-day, 200 flawsBleepingComputer · Jun 9, 2026
- Microsoft June 2026 Patch Tuesday fixes 6 zero-days, 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