Origin Validation Flaw in Fujitsu Security Solution AuthConductor Client Basic
CVE-2026-20893

8.5HIGH

Key Information:

Vendor

Fujitsu Client Computing Limited

Status
Fujitsu Security Solution Authconductor Client Basic V2
Vendor
CVE Published:
7 January 2026

What is CVE-2026-20893?

An origin validation error exists in the Fujitsu Security Solution AuthConductor Client Basic, specifically in versions up to and including 2.0.25.0. This vulnerability enables an attacker with access to the Windows system where the product is deployed to execute arbitrary code with SYSTEM privileges. Additionally, this flaw allows for modifications to registry values, potentially compromising system integrity and security. It's crucial for users to be aware of this vulnerability and apply necessary patches or mitigations.

Affected Version(s)

Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier

References

https://www.fmworld.net/biz/common/info/202601acc/
https://jvn.jp/en/jp/JVN24626628/

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

CVSS V3.0

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.