# CVE-2025-4412: TCC Bypass via Dylib Loading in Viscosity.app

CVE-2025-4412 is fixed in Viscosity on 1 platform by Viscosity 1.11.4.1835 (version 1.11.4.1835), released January 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-4412
- Priority: Routine
- CVSS: 4.8
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 27, 2025
- Weakness: CWE-276: Incorrect Default Permissions
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-4412

## Description

On macOS systems, by utilizing a Launch Agent and loading the viscosity_openvpn process from the application bundle, it is possible to load a dynamic library with Viscosity's TCC (Transparency, Consent, and Control) identity. The acquired resource access is limited without entitlements such as access to the camera or microphone. Only user-granted permissions for file resources apply. Access to other resources beyond granted-permissions requires user interaction with a system prompt asking for permission.  This issue was fixed in version 1.11.5 of Viscosity.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Viscosity | 1.11.4.1835 | [Viscosity 1.11.4.1835](https://patchblox.com/security/data/fix/windows-app/sparklabs.viscosity-1.11.4.1835.md) | Jan 15, 2025 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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