CVE-2026-55007

EUVD-2026-73178
Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.1 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 52.92%
Affected Products (NVD)
VendorProductVersion
microsoftexchange_server
𝑥
< 15.02.2562.049
microsoftexchange_server
15.2.0.0 ≤
𝑥
< 15.2.1544.46
microsoftexchange_server
15.2.0.0 ≤
𝑥
< 15.2.1748.51
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55007