The Okta Credential Provider for Windows does not validate a serialized credential buffer before interpreting it as a Kerberos logon structure. The buffer size and packed string offsets are not checked. Processing a malformed buffer can cause the credential provider process to terminate unexpectedly or lead to out-of-bounds memory reads and writes, which may result in the disclosure of adjacent process memory into local system logs.
History

Mon, 19 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Okta
Okta okta Credential Provider For Windows
Vendors & Products Okta
Okta okta Credential Provider For Windows

Wed, 14 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Description The Okta Credential Provider for Windows does not validate a serialized credential buffer before interpreting it as a Kerberos logon structure. The buffer size and packed string offsets are not checked. Processing a malformed buffer can cause the credential provider process to terminate unexpectedly or lead to out-of-bounds memory reads and writes, which may result in the disclosure of adjacent process memory into local system logs.
Title Improper Input Validation in the Okta Credential Provider for Windows
Weaknesses CWE-125
CWE-20
CWE-787
References
Metrics cvssV3_1

{'score': 6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Okta

Published: 2026-10-13T20:07:37.375Z

Updated: 2026-10-14T19:27:28.784Z

Reserved: 2026-08-24T22:04:00.475Z

Link: CVE-2026-78628

cve-icon Vulnrichment

Updated: 2026-10-14T19:27:25.202Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T21:18:21.630

Modified: 2026-10-15T20:38:04.303

Link: CVE-2026-78628

cve-icon Redhat

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