PT-2025-42128 · Microsoft · Exchange Server

Published 2025-10-14 · Updated 2026-06-16 · CVE-2025-59248

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

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

Description Improper input validation in Microsoft Exchange Server can allow an unauthorized attacker to perform spoofing over a network.

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

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-13008

CVE-2025-59248

Affected Products

Exchange Server

References · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-59248 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59248 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-13008 · Security Note
• https://osv.dev/vulnerability/CVE-2025-59248 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-59248 · Security Note
• https://twitter.com/CVEnew/status/1978171157502476335 · Twitter Post
• https://t.me/cveNotify/167465 · Telegram Post