VDB

CVE-2026-55007

CVE-2026-55007 PUBLISHED CVSS 8.1 HIGH

Reported by microsoft · Published September 8, 2026

Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.

Risk Scores

CVSS 3.1
8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Affected Products

VendorProductVersions
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 1415.02.0.0
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 1515.02.0.0
MicrosoftMicrosoft Exchange Server Subscription Edition RTM15.02.0.0
MicrosoftMicrosoft Exchange Server Subscription Edition RTM15.02.0.0
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 1415.02.0.0
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 1515.02.0.0
microsoftexchange_server_se15.02.0.0
microsoftexchange_server_201915.02.0.0, 15.02.0.0

Timeline

  • Sep 8, 2026 CVE Published
  • Sep 9, 2026 Coalition ESS Score
  • Sep 9, 2026 Security Advisory
  • Sep 9, 2026 CVE Updated

References

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