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TI-2026-73506 Aliases CVE-2026-78628GHSA-mpf7-rw4x-66w7

Improper input validation in Okta Credential Provider for Windows

Priority LOW 28CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

The Okta Credential Provider for Windows from 0 before 1.4.6.0 does not validate a serialized credential buffer before interpreting it as a Kerberos logon structure, so the buffer size and packed string offsets are unchecked (CWE-20). A local user with high privileges can crash the credential provider process or cause out-of-bounds memory reads and writes (CWE-125, CWE-787). These errors can disclose adjacent process memory into local system logs.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00132 2nd percentileScored 2026-11-07
Fix Fixed Okta Credential Provider for Windows (Okta): 1.4.6.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OktaOkta Credential Provider for Windowsbefore 1.4.6.01.4.6.0Patch availableCNA
  • Okta Credential Provider for Windows VendorOkta Affected before 1.4.6.0 Fixed in 1.4.6.0 Patch available CNA

Remediation

Update the Okta Credential Provider for Windows to version 1.4.6.0 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Okta Credential Provider for Windows (Okta) Fixed in 1.4.6.0

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-78628
  2. 2026-10-13 Alias added: GHSA-mpf7-rw4x-66w7
  3. 2026-10-14 Priority changed: MEDIUM → LOW
  4. 2026-10-15 CISA SSVC decision points changed

References

Other 1

  • TI-2021-20426 Imprivata Privileged Access Management (formally Xton Privileged Access Management) 2.3.202112051108 allows XSS. CVSS 3.1MEDIUM 5.4
  • TI-2022-08176 Code injection in Okta Advanced Server Access Client CVSS 3.1HIGH 8.8
  • TI-2021-09349 A command injection vulnerability in the cookieDomain and relayDomain parameters of Okta… CVSS 3.1MEDIUM 6.7
  • TI-2026-54670 Improper Handling of SAML Assertion Attributes in Okta Access Gateway Advanced Mode Datastores CVSS 3.1CRITICAL 9.9
  • TI-2026-79552 Command execution via Admin Console input in Okta Access Gateway CVSS 3.1CRITICAL 9.1
  • TI-2023-00089 Command injection in Okta Advanced Server Access CVSS 3.1HIGH 8.8
See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences