BRAIN2: Incorrect Default Permissions
CVE-2026-16246 is a high-severity incorrect default permissions vulnerability in BRAIN2 from Bizerba SE & Co. KG, with a CVSS 3.1 base score of 7.3 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. Affected BRAIN2 versions: >3.09. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.15% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of BRAIN2 you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Bizerba SE & Co. KG | BRAIN2 | >3.09 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- LowSome restricted data can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L. Scored by CNA.
Official description
In BRAIN2 versions prior to 3.09, the application LogPathConfig.exe is executed during setup. As a result, the Windows group Everyone is granted full control over %ProgramData% instead of being restricted to %ProgramData%\Bizerba\BRAIN2\. Starting with BRAIN2 3.09, the setup no longer executes this tool. However, the optional component Bizerba ScriptService still executes it. Bizerba ScriptService is being deprecated and will no longer be included starting with BRAIN2 version 3.11.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Incorrect Default Permissions
During installation, installed file permissions are set to allow anyone to modify those files.
How developers prevent this class of flaw
- The architecture needs to access and modification attributes for files to only those users who actually require those actions.
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
More Incorrect Default Permissions vulnerabilities (CWE-276)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in BRAIN2
- 10.0 Critical severity
Recent Incorrect Default Permissions vulnerabilities
- 7.3 High severity
- 8.8 High severity
- 7.8 High severity
- 8.5 High severity
- 8.2 High severity
- 9.4 Critical severity
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