CVE-2026-44629: Synergis Softwire Authentication Bypass Vulnerability

CVE-2026-44629 Overview

CVE-2026-44629 is an improper access control vulnerability affecting the Genetec Synergis Softwire installation folder. The flaw impacts Streamvault all-in-one appliances in the SV-100E and SV-300E series, as well as Synergis Softwire deployments installed on Windows servers. A local, low-privileged attacker can abuse insecure directory permissions to modify files within the installation path. Because the scope changes after exploitation, the attacker can influence components running with higher privileges. The weakness maps to CWE-922: Insecure Storage of Sensitive Information.

Critical Impact
A local authenticated user can tamper with files inside the Synergis Softwire installation folder, enabling privilege escalation and compromise of access control operations on Streamvault appliances and Windows servers.

Affected Products

Genetec Streamvault SV-100E series all-in-one appliances
Genetec Streamvault SV-300E series all-in-one appliances
Genetec Synergis Softwire installed on Windows servers (versions prior to 12.0.2 and 12.2.0)

Discovery Timeline

2026-08-28 - CVE-2026-44629 published to NVD
2026-09-03 - Last updated in NVD database

Technical Details for CVE-2026-44629

Vulnerability Analysis

Synergis Softwire is the embedded software that runs on Genetec Synergis access control appliances and manages door controllers, readers, and credential logic. The vulnerability arises because the Softwire installation folder is created with permissions that allow non-administrative local users to read, write, or replace files inside it. Because Synergis services execute at higher privilege, any file that a low-privileged user overwrites is later loaded or executed in a more privileged context. The result is a local privilege escalation path that also breaks the integrity of the access control system itself.

Root Cause

The root cause is insecure directory access control on the Synergis Softwire installation path [CWE-922]. Directory Access Control Lists (ACLs) grant write or modify rights to standard users rather than restricting the folder to administrators and the Synergis service account. This design condition permits tampering with binaries, configuration files, and libraries used by privileged Synergis processes.

Attack Vector

Exploitation requires local access with low privileges and no user interaction. An attacker who can authenticate to a Streamvault appliance or a Windows server running Synergis Softwire replaces a legitimate file, such as a service binary or a DLL, inside the installation folder. When the Synergis service starts, restarts, or loads the modified component, the attacker's code executes in the higher-privilege context. The scope change captured in the CVSS vector reflects impact beyond the initially compromised account, including tampering with physical access control decisions.

No public proof-of-concept exploit is available for CVE-2026-44629 at the time of publication. Refer to the vendor security bulletins for Synergis Softwire 12.0 and Synergis Softwire 12.2 for technical remediation details.

Detection Methods for CVE-2026-44629

Indicators of Compromise

Unexpected file creation, modification, or replacement inside the Synergis Softwire installation directory on Streamvault appliances or Windows hosts.
New or modified DLLs, executables, or configuration files loaded by Synergis services outside of an authorized update window.
Synergis service processes spawning non-standard child processes such as cmd.exe, powershell.exe, or scripting engines.

Detection Strategies

Enable Windows object access auditing on the Synergis Softwire installation folder to log write events by non-administrative accounts.
Baseline the file hashes of Synergis binaries after installation and alert on integrity drift.
Correlate local logon events for low-privileged users with subsequent file writes into the Synergis directory tree.

Monitoring Recommendations

Forward Windows Security, Sysmon, and application logs from Streamvault appliances to a centralized analytics platform for cross-host correlation.
Monitor Synergis service start, stop, and reload events for timing that aligns with file changes inside the installation folder.
Track privileged process launches whose parent is a Synergis service, as this pattern may indicate successful escalation.

How to Mitigate CVE-2026-44629

Immediate Actions Required

Upgrade Synergis Softwire to version 12.0.2, 12.2.0, or later on all affected Streamvault appliances and Windows servers.
Restrict interactive and remote logon rights on Synergis hosts to administrators and vetted operators only.
Audit and harden the Access Control List on the Synergis Softwire installation folder to remove write permissions for non-administrative users.

Patch Information

Genetec has resolved the issue in Synergis Softwire 12.0.2 and 12.2.0. Details are provided in the Genetec Synergis 12.0 Security Update and the Genetec Synergis 12.2 Security Update. Streamvault customers should follow Genetec's appliance update procedure to ensure the underlying Synergis Softwire component is refreshed.

Workarounds

Manually tighten NTFS permissions on the Synergis Softwire installation directory so that only SYSTEM, administrators, and the Synergis service account retain write access.
Restrict physical and remote access to Streamvault appliances until patching is complete, following the principle of least privilege for all operator accounts.
Enable application allowlisting (for example, Windows Defender Application Control or AppLocker) to block execution of unsigned binaries from the Synergis directory.

bash

# Example: audit and harden ACLs on the Synergis Softwire installation folder (Windows)
icacls "C:\Program Files (x86)\Genetec Synergis\Softwire" /inheritance:r
icacls "C:\Program Files (x86)\Genetec Synergis\Softwire" /grant:r "SYSTEM:(OI)(CI)F" "Administrators:(OI)(CI)F"
icacls "C:\Program Files (x86)\Genetec Synergis\Softwire" /remove "Users" "Authenticated Users"