CVE-2026-16606: Unauthenticated remote code execution (pre-auth RCE) vulnerability in openFT for Linux and Oracle Solaris

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-22 · updated 2026-07-22
Weakness: CWE-94

Description

A vulnerability in Fujitsu Software Linux openFT and Fujitsu Software Oracle Solaris openFT before version 12.1D00 allows for unauthenticated remote code execution (pre-auth RCE) on GNU/Linux or Oracle Solaris. The Fsas Technologies PSIRT obtained that intelligence internally and covers the CVE beyond its CNA scope under existing agreement with Fujitsu Germany.

Affected products

Fujitsu Linux openFT: through 12.1C96
Fujitsu Oracle Solaris openFT: through 12.1C95

References

https://global.fujitsu/de-de/capabilities/mainframe-solutions/bs2000-integration
https://security.eu.fsastech.com/IndexDownload.asp?SoftwareGuid=20873292-0006-4a1c-a188-3940762a0075
https://security.ts.fujitsu.com/ProductSecurity/content/FsasTech-PSIRT-FTI-FG-2026-042411-Security-Notice.pdf

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