VULNERABILITY INTELLIGENCE

CVE-2018-18555

CVSS score9.9 CRITICAL
EPSS probability1.77%
CISA KEVNot currently listed
Published2018-12-17
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Description

A sandbox escape issue was discovered in VyOS 1.1.8. It provides a restricted management shell for operator users to administer the device. By issuing various shell special characters with certain commands, an authenticated operator user can break out of the management shell and gain access to the underlying Linux shell. The user can then run arbitrary operating system commands with the privileges afforded by their account.

Weakness classification

  • nvd@nist.gov: CWE-78

Primary references