# CVE-2026-90894

## Summary

- **CVE ID:** CVE-2026-90894
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-88, CWE-78, CWE-269
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 15, 2026

## Description

Parallels Desktop runs prl_disp_service as root. Local clients reach it on the world-writable socket /var/run/prl_disp_service.socket. PrlSrv_LoginLocal accepts peer credentials. No Parallels signature. No admin group.



After login, PrlSrv_InstallAppliance lets you pick the appliance folder (sVmParentPath). The daemon unpacks with one string, tar -xf "%1" -C "%2", then Qt QProcess::splitCommand chops that string into words. A quote in the folder name closes early. The leftover text becomes extra tar flags. macOS tar --use-compress-program= runs the named program as root.

## Affected Products

- Parallels — Parallels Desktop for Mac (26.4.0)
- Parallels — Parallels Desktop for Mac (27.0.1)
- Parallels — Parallels Desktop for Mac (27.0.0)

## References

- [CNA](https://www.parallels.com/products/desktop/)
- [CNA](https://kb.parallels.com/en/131168)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.15%
- **EPSS Percentile:** 4.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._