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Vulnerabilities

Vulnerability · CVE-2026-20893

Origin validation error issue exists in Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier.

Published Jan 7, 2026 · catalog updated Jan 7, 2026 · Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-20893. EPSS is 0.13%. Act only if a listed version of Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Vendor / distro source
Affected products
vendor Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier2.0.25.0 and earlier

How to fix CVE-2026-20893

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-20893. EPSS is 0.13%. Act only if a listed version of Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2 is installed.

Which versions are affected?

Compare what you have installed with Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier 2.0.25.0 and earlier. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 7, 2026 · EUVD

    Detected

    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.

  2. Jan 7, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-20893

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-20893

    30-day exploitation probability 0.13%

    first.org
  • EUVDVulnerability recordEUVD-2026-1233

    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 SYSTE

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 31, 2026
  • EUVDOct 31, 2026