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Vulnerability record · CVE-2025-58107 · published 2 March 2026

CVE-2025-58107: Cleartext transmission vulnerability

In Microsoft Exchange through 2019, Exchange ActiveSync (EAS) configurations on on-premises servers may transmit sensitive data from Samsung mobile devices in cleartext, including the user's name, e-mail address, device ID, bearer token, and base64-encoded password.

7.5 CVSS 3.1 High EPSS 0.25% · top 85.0% CWE-319 · Cleartext transmission Awaiting Analysis
7.5CVSS 3.1 base score
0.25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

In Microsoft Exchange through 2019, Exchange ActiveSync (EAS) configurations on on-premises servers may transmit sensitive data from Samsung mobile devices in cleartext, including the user's name, e-mail address, device ID, bearer token, and base64-encoded password.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

LinkTags
https://geochen.medium.com/microsoft-activesync-legacy-protocol-plaintext-credential-and-token-exposure-vulnerability-b0

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Source: NIST National Vulnerability Database (record CVE-2025-58107), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.