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CVE-2026-53904

6.3 medium SSVC exploitation: none Undergoing Analysis
NVD · CVE.org

MCO is vulnerable to Account Denial of Service due to improper implementation of password reset functionality. Each password reset request invalidates previously set password as well as previously issued temporary passwords, furthermore, password resets are not limited in any way. An attacker who provides victim's email and answer to their security question, can successfully initiate the reset process and continuously invalidate credentials, effectively locking the victim out of their account. Answering security questions has a limited number of tries which lowers the risk of this vulnerability. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 6.3 · mycomplianceofficeNVD modified 2026-10-25 17:10

Affected (CPE criteria) 1

  • cpe:2.3:a:mycomplianceoffice:mco:25.3.3.1:*:*:*:*:*:*:*

References 2