Quick answers
- Is CVE-2026-78628 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-78628 being exploited in the wild.
- How severe is CVE-2026-78628?
- Medium severity, with a CVSS score of 6, published 13 October 2026.
- Which products and versions are affected?
- Okta Credential Provider for Windows prior to 1.4.6.0.
- Is there a fix for CVE-2026-78628?
- Yes: fixed in 1.4.6.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-78628 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-78628?
- Check whether you run Okta Credential Provider for Windows at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 1.4.6.0
Technical details
The vulnerability is an improper input validation flaw (CWE-20) in credential buffer deserialization; the provider does not check buffer size or packed string offsets before interpreting data as a Kerberos logon structure, leading to out-of-bounds reads and writes (CWE-125, CWE-787). Attack requires local authenticated access and the ability to supply a crafted serialized credential buffer through the logon or unlock path; a successful exploit may cause denial of service or memory disclosure into local logs.
Affected products
- Okta Credential Provider for Windows prior to 1.4.6.0
Timeline
- 2026-10-13: disclosed