What’s Vulnerable › Vulnerabilities
CVE-2026-78628: Improper Input Validation in the Okta Credential Provider for Windows
- Severity: medium (CVSS 6.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-13 · updated 2026-10-15
- Weakness: CWE-20
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.
Affected products
- Okta Credential Provider for Windows: before 1.4.6.0 — fixed in 1.4.6.0
How to fix
Upgrade to a fixed version: Okta Credential Provider for Windows 1.4.6.0. Check the vendor advisory for mitigations.
References
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