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Vulnerability · Published Jan 7, 2026 · Assigned by jpcert

CVE-2026-20893

High 7.8

In plain English

A high-severity security flaw in Fujitsu Security Solution AuthConductor Client Basic V2 from Fujitsu Client Computing Limited. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.0)7.8High
Exploit odds (30 days)0.1%top 97.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Fujitsu Client Computing Limited Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier

Weakness: CWE-346 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References