High severity8.1NVD Advisory· Published Sep 8, 2026· Updated Oct 5, 2026
CVE-2026-55007
CVE-2026-55007
Description
Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
Affected products
1Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55007nvdPatchVendor Advisory
News mentions
6- September 2026 Patch Tuesday: Record patch count, 2 zero-days, and a SigRed successorHelp Net Security · Sep 9, 2026
- Microsoft Patches Record 974 Flaws, Including Two Exploited Windows Zero-DaysThe Hacker News · Sep 9, 2026
- Microsoft breaks Patch Tuesday record with 974-CVE delugeThe Register Security · Sep 9, 2026
- Patch Tuesday - September 2026Rapid7 Blog · Sep 8, 2026
- Microsoft Patches Record 974 Vulnerabilities, Including Two Exploited Zero-DaysSecurityWeek · Sep 8, 2026
- Massive Microsoft Patch Tuesday September 2026 – 973 Vulnerabilities Fixed, Including 2 Zero-DaysCyber Security News · Sep 8, 2026