CVE-2026-16607 in Linux openFT
Summary
by MITRE • 07/22/2026
A vulnerability in Fujitsu Software Linux openFT and Fujitsu Software Oracle Solaris openFT before version 12.1D00 allows for local privilege escalation to root of an already authenticated user 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.
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability represents a critical local privilege escalation flaw affecting Fujitsu Software Linux openFT and Fujitsu Software Oracle Solaris openFT versions prior to 12.1D00. The issue allows authenticated users to escalate their privileges to root access, fundamentally compromising system security and integrity. The vulnerability stems from improper privilege handling within the software components that manage file system access and authentication processes. Attackers who have already established legitimate user sessions can exploit this weakness to gain full administrative control over affected systems.
The technical implementation of this flaw involves a privilege escalation mechanism that fails to properly validate user credentials or enforce proper access controls during critical system operations. This type of vulnerability typically occurs when software components do not adequately implement mandatory access controls or fail to properly sanitize input parameters that determine privilege levels. The flaw likely exists in the file system access subsystem where legitimate user processes can manipulate internal state variables or bypass security checks through improper privilege validation routines.
From an operational impact perspective, this vulnerability creates severe risk for organizations relying on Fujitsu software platforms, particularly in environments where multiple users have legitimate access to systems. Once exploited, attackers gain complete control over affected systems including the ability to modify system files, install malicious software, create new user accounts, and potentially access sensitive data repositories. The vulnerability affects both GNU/Linux and Oracle Solaris operating systems, expanding its potential impact across diverse enterprise environments.
Organizations should prioritize immediate patching of all affected systems running Fujitsu Software Linux openFT or Fujitsu Software Oracle Solaris openFT versions before 12.1D00 to mitigate this risk. System administrators should also implement additional monitoring measures to detect unauthorized privilege escalation attempts and review system logs for evidence of exploitation. The vulnerability aligns with CWE-276, which describes improper file permissions, and may relate to ATT&CK technique T1068, which covers local privilege escalation through system weaknesses. Security teams should conduct comprehensive vulnerability assessments and consider implementing network segmentation to limit potential lateral movement if exploitation occurs.