CVE Vulnerabilities

CVE-2025-59249

Weak Authentication

Published: Oct 14, 2025 | Modified: Oct 28, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Weakness

The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.

Affected Software

Name Vendor Start Version End Version
Exchange_server Microsoft * 15.02.2562.029 (excluding)
Exchange_server Microsoft 2016 (including) 2016 (including)
Exchange_server Microsoft 2016-cumulative_update_1 (including) 2016-cumulative_update_1 (including)
Exchange_server Microsoft 2016-cumulative_update_10 (including) 2016-cumulative_update_10 (including)
Exchange_server Microsoft 2016-cumulative_update_11 (including) 2016-cumulative_update_11 (including)
Exchange_server Microsoft 2016-cumulative_update_12 (including) 2016-cumulative_update_12 (including)
Exchange_server Microsoft 2016-cumulative_update_13 (including) 2016-cumulative_update_13 (including)
Exchange_server Microsoft 2016-cumulative_update_14 (including) 2016-cumulative_update_14 (including)
Exchange_server Microsoft 2016-cumulative_update_15 (including) 2016-cumulative_update_15 (including)
Exchange_server Microsoft 2016-cumulative_update_16 (including) 2016-cumulative_update_16 (including)
Exchange_server Microsoft 2016-cumulative_update_17 (including) 2016-cumulative_update_17 (including)
Exchange_server Microsoft 2016-cumulative_update_18 (including) 2016-cumulative_update_18 (including)
Exchange_server Microsoft 2016-cumulative_update_19 (including) 2016-cumulative_update_19 (including)
Exchange_server Microsoft 2016-cumulative_update_2 (including) 2016-cumulative_update_2 (including)
Exchange_server Microsoft 2016-cumulative_update_20 (including) 2016-cumulative_update_20 (including)
Exchange_server Microsoft 2016-cumulative_update_21 (including) 2016-cumulative_update_21 (including)
Exchange_server Microsoft 2016-cumulative_update_22 (including) 2016-cumulative_update_22 (including)
Exchange_server Microsoft 2016-cumulative_update_3 (including) 2016-cumulative_update_3 (including)
Exchange_server Microsoft 2016-cumulative_update_4 (including) 2016-cumulative_update_4 (including)
Exchange_server Microsoft 2016-cumulative_update_5 (including) 2016-cumulative_update_5 (including)
Exchange_server Microsoft 2016-cumulative_update_6 (including) 2016-cumulative_update_6 (including)
Exchange_server Microsoft 2016-cumulative_update_7 (including) 2016-cumulative_update_7 (including)
Exchange_server Microsoft 2016-cumulative_update_8 (including) 2016-cumulative_update_8 (including)
Exchange_server Microsoft 2016-cumulative_update_9 (including) 2016-cumulative_update_9 (including)
Exchange_server Microsoft 2019 (including) 2019 (including)
Exchange_server Microsoft 2019-cumulative_update_1 (including) 2019-cumulative_update_1 (including)
Exchange_server Microsoft 2019-cumulative_update_10 (including) 2019-cumulative_update_10 (including)
Exchange_server Microsoft 2019-cumulative_update_11 (including) 2019-cumulative_update_11 (including)
Exchange_server Microsoft 2019-cumulative_update_12 (including) 2019-cumulative_update_12 (including)
Exchange_server Microsoft 2019-cumulative_update_13 (including) 2019-cumulative_update_13 (including)
Exchange_server Microsoft 2019-cumulative_update_2 (including) 2019-cumulative_update_2 (including)
Exchange_server Microsoft 2019-cumulative_update_3 (including) 2019-cumulative_update_3 (including)
Exchange_server Microsoft 2019-cumulative_update_4 (including) 2019-cumulative_update_4 (including)
Exchange_server Microsoft 2019-cumulative_update_5 (including) 2019-cumulative_update_5 (including)
Exchange_server Microsoft 2019-cumulative_update_6 (including) 2019-cumulative_update_6 (including)
Exchange_server Microsoft 2019-cumulative_update_7 (including) 2019-cumulative_update_7 (including)
Exchange_server Microsoft 2019-cumulative_update_8 (including) 2019-cumulative_update_8 (including)
Exchange_server Microsoft 2019-cumulative_update_9 (including) 2019-cumulative_update_9 (including)

Extended Description

Attackers may be able to bypass weak authentication faster and/or with less effort than expected.

References