PT-2026-22591 · Microsoft+1 · Exchange Activesync+2

Published 2026-03-02 · Updated 2026-03-07 · CVE-2025-58107

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Exchange versions prior to 2020

Description Exchange ActiveSync (EAS) configurations on on-premises servers may transmit sensitive data in cleartext from Samsung mobile devices. This data includes the user's name, email address, device ID, bearer token, and base64-encoded password. The Exchange ActiveSync protocol is affected.

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

Cleartext Transmission of Sensitive Information

Weakness Enumeration

CWE-319

Related Identifiers

CVE-2025-58107

Affected Products

Exchange Activesync

Exchange Server

Samsung Mobile Devices

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2025-58107 · Security Note
• https://geochen.medium.com/microsoft-activesync-legacy-protocol-plaintext-credential-and-token-exposure-vulnerability-b0fad89014fa · Note
• https://twitter.com/cracbot/status/2029512346553745682 · Twitter Post
• https://twitter.com/cracbot/status/2029874802824204332 · Twitter Post
• https://twitter.com/cracbot/status/2030237102299124195 · Twitter Post