CVE-2025-53782

Microsoft Exchange Server Elevation of Privilege Vulnerability

CVSS 8.4 HIGHEPSS 0.3%CWE-303

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.4EPSS 0.3%KEV nãoPoC —Patch referenciado

Lifecycle

14 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally.

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

Affected products

Microsoft · Microsoft Exchange Server 2016 Cumulative Update 23 Microsoft · Microsoft Exchange Server 2019 Cumulative Update 14 Microsoft · Microsoft Exchange Server 2019 Cumulative Update 15 Microsoft · Microsoft Exchange Server Subscription Edition RTM

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References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53782