PT-2025-42005 · Microsoft · Exchange Server

CVE-2025-53782 · Published 2025-10-14 · Updated 2026-06-16

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Description An incorrect implementation of the authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally. An unauthenticated attacker with local access can exploit this flaw to gain administrative control over the affected system.

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

DoS

Weakness Enumeration

CWE-303

Related Identifiers

BDU:2025-14037

CVE-2025-53782

Affected Products

Exchange Server

References · 9

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-53782 · Security Note
• https://bdu.fstec.ru/vul/2025-14037 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53782 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-53782 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53782 · Security Note
• https://t.me/cveNotify/167464 · Telegram Post
• https://t.me/cveNotify/140489 · Telegram Post
• https://twitter.com/CVEnew/status/1978198295013994549 · Twitter Post
• https://twitter.com/CveTodo/status/1978161427559940188 · Twitter Post