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CVE-2026-20893

HIGHCVSS 8.5/10EPSS 0.12%

Last modified

CVE-2026-20893 is a high-severity vulnerability rated 8.5/10 on the CVSS scale. 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.. EPSS estimates a 0.12% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 4.0
8.5/10

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:X/V:X/RE:X/U:X

CVSS 3.0
7.8/10

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.12%

2.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-20893?
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.
How severe is CVE-2026-20893?
CVE-2026-20893 has a CVSS score of 8.5/10 (HIGH severity). The EPSS model estimates a 0.12% probability of exploitation in the next 30 days.
How do I fix CVE-2026-20893?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-20893?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST