CVE-2026-2627 in FBackup
Summary
by MITRE • 02/18/2026
A security flaw has been discovered in Softland FBackup up to 9.9. This impacts an unknown function in the library C:\Program Files\Common Files\microsoft shared\ink\HID.dll of the component Backup/Restore. The manipulation results in link following. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 02/18/2026
The vulnerability identified as CVE-2026-2627 represents a critical security flaw within Softland FBackup version 9.9 and earlier, specifically targeting the HID.dll library component located in the Microsoft shared ink directory. This issue manifests as a link following vulnerability that operates through an unknown function within the backup and restore functionality of the software. The flaw exists within the Windows common files directory structure, indicating a potential for broader system impact beyond the immediate backup application. The vulnerability's presence in the Microsoft shared ink component suggests possible integration with touch input or stylus-based input systems, though the exact nature of the function remains unspecified in the description.
The technical exploitation of this vulnerability requires local access, meaning an attacker must already have compromised system credentials or physical access to the target machine. This local requirement significantly limits the attack surface but does not eliminate the threat, particularly in environments where insider threats or compromised user accounts exist. The fact that a public exploit has been released indicates that the vulnerability has been actively weaponized by malicious actors, increasing the risk to organizations that have not yet patched or mitigated the issue. The vulnerability's classification as a link following mechanism suggests potential for arbitrary code execution or privilege escalation through manipulation of file paths or symbolic links within the affected DLL.
The operational impact of this vulnerability extends beyond simple data loss or corruption, as it represents a potential pathway for attackers to gain unauthorized access to backup systems and potentially compromise entire network infrastructures. Backup systems often contain sensitive organizational data and may have elevated privileges or access to critical system resources, making them attractive targets for attackers seeking persistent access or lateral movement within networks. The vulnerability's presence in the common files directory structure indicates that multiple applications may be affected, as the HID.dll library could be referenced by various Microsoft and third-party applications. This interconnectedness amplifies the potential impact of the vulnerability.
The security implications of CVE-2026-2627 align with CWE-120, which covers buffer overflow vulnerabilities, and may also relate to CWE-20, concerning input validation issues, depending on how the link following mechanism is implemented. The attack vector maps to ATT&CK technique T1059.001, which involves command and scripting interpreter execution, potentially through the exploitation of the vulnerable DLL. The lack of vendor response despite early disclosure indicates either inadequate security monitoring or potential denial of service issues from the vendor's side, leaving organizations without official patches or guidance. Organizations should implement immediate mitigations including disabling the affected component, restricting local access to backup systems, and monitoring for suspicious file access patterns in the Microsoft shared ink directory.
Mitigation strategies should focus on immediate local system hardening measures, including restricting write permissions to the affected DLL location, implementing application control policies to prevent execution of unauthorized binaries, and conducting comprehensive system audits to identify any exploitation attempts. The vulnerability's nature suggests that traditional antivirus solutions may not detect the exploitation, requiring more sophisticated endpoint detection and response capabilities. Organizations should also consider implementing network segmentation to limit lateral movement potential and establish incident response procedures specifically addressing backup system compromises. The public availability of the exploit necessitates immediate action, as the vulnerability represents a known threat that can be easily leveraged by threat actors without specialized knowledge of the underlying technical details.