CVE-2025-53782

HIGH

Microsoft Exchange Server - Privilege Escalation

Title source: llm
STIX 2.1

Description

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

References (1)

Core 1
Core References

Scores

CVSS v3 8.4
EPSS 0.0032
EPSS Percentile 24.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-303
Status published
Products (4)
microsoft/exchange_server 2016 (23 CPE variants)
microsoft/exchange_server 2019 (14 CPE variants)
microsoft/exchange_server < 15.02.2562.029
microsoft/exchange_server_subscription_edition < 15.02.2562.029
Published Oct 14, 2025
Tracked Since Feb 18, 2026