PT-2025-42129 · Microsoft · Exchange Server

Published 2025-10-14 · Updated 2026-02-09 · CVE-2025-59249

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft Exchange Server (affected versions not specified)

Description An issue with weak authentication in Microsoft Exchange Server could allow an authorized attacker to elevate privileges on a network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-1390

Related Identifiers

BDU:2025-13015

CVE-2025-59249

Affected Products

Exchange Server

References · 7

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59249 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-59249 · Security Note
• https://bdu.fstec.ru/vul/2025-13015 · Security Note
• https://osv.dev/vulnerability/CVE-2025-59249 · Vendor Advisory
• https://reddit.com/r/Automox/comments/1o6lcbo/patch_tuesday_signs_of_exploit_unity_runtime · Reddit Post
• https://t.me/cveNotify/140752 · Telegram Post
• https://twitter.com/CVEnew/status/1978198241020657900 · Twitter Post