CVE-2026-78628

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.

• https://trust.okta.com/security-advisories/improper-input-validation-in-the-okta-credential-provider-for-windows-cve-2026-78628