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PatchSiren cyber security CVE debrief

CVE-2026-16607 Fujitsu CVE debrief

CVE-2026-16607 is a high-severity vulnerability in Fujitsu Software Linux openFT and Fujitsu Software Oracle Solaris openFT, allowing for local privilege escalation to root for an already authenticated user on GNU/Linux or Oracle Solaris. The vulnerability is addressed in version 12.1D00 of the software. System administrators and security teams should assess the risk and apply necessary patches or mitigations. The Fsas Technologies PSIRT obtained this intelligence internally and covers the CVE beyond its CNA scope under an existing agreement with Fujitsu Germany.

Vendor
Fujitsu
Product
Linux openFT
CVSS
HIGH 8.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-22
Original CVE updated
2026-07-22
Advisory published
2026-07-22
Advisory updated
2026-07-22

Who should care

This vulnerability affects users of Fujitsu Software Linux openFT and Fujitsu Software Oracle Solaris openFT. System administrators and security teams should assess the risk and apply necessary patches or mitigations. Users with affected deployments should prioritize patching or mitigating this vulnerability to prevent local privilege escalation.

Technical summary

The vulnerability has a CVSS score of 8.5 and is classified as HIGH severity. It allows local authenticated users to escalate privileges to root on affected systems, specifically in Fujitsu Software Linux openFT and Fujitsu Software Oracle Solaris openFT before version 12.1D00. The Fsas Technologies PSIRT obtained this intelligence internally and covers the CVE beyond its CNA scope under an existing agreement with Fujitsu Germany. Affected users should prioritize patching or mitigating this vulnerability.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, as it allows for local privilege escalation.

Recommended defensive actions

  • Apply the patch or update to version 12.1D00 of Fujitsu Software Linux openFT and Fujitsu Software Oracle Solaris openFT.
  • Conduct a thorough inventory of affected systems and prioritize patching based on risk and exposure.
  • Implement compensating controls, such as monitoring and access restrictions, if patching is not immediately feasible.
  • Verify the effectiveness of patches and mitigations through testing and validation.
  • Review relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record was published on 2026-07-22T16:17:16.963Z and was last modified on 2026-07-22T20:52:35.747Z. The NVD entry is currently Deferred. The Fsas Technologies PSIRT obtained this intelligence internally and covers the CVE beyond its CNA scope under an existing agreement with Fujitsu Germany. The evidence is limited, and defenders should verify the affected scope and apply necessary patches or mitigations.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-22T16:17:16.963Z and has not been modified since then. The NVD entry is currently Deferred.