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Vulnerability record · CVE-2026-20893 · published 7 January 2026

CVE-2026-20893: Origin validation error vulnerability

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.

8.5 CVSS 4.0 High EPSS 0.13% · top 98.0% CWE-346 · Origin validation error Deferred
8.5CVSS 4.0 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-20893), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.