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CVE-2026-55007

nvd nist
Published: Sep 8, 2026Modified: Oct 5, 2026

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8.1
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.2 / Impact: 5.9
Source: secure@microsoft.com (Secondary)

Description

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

Affected (3)

Microsoft
2 products
Exchange Server
Exchange Server Subscription Edition
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
Exchange Server
Version 2019 cumulative_update_14
Exchange Server
Version 2019 cumulative_update_15
Exchange Server Subscription Edition
version < 15.02.2562.049

Related CWEs

CWE-415
Double Free
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

References (1)

Source: secure@microsoft.com
PatchVendor Advisory

Timeline

No history available yet.