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TI-2018-13120 Aliases CVE-2018-18555GHSA-2m72-4x6w-fqpx

A sandbox escape issue was discovered in VyOS 1.1.8.

Priority MEDIUM 46CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

EPSS 0.01769 78th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:vyos:vyos:1.1.8:*:*:*:*:*:*:*1.1.8VulnerableVyOS
  • cpe:2.3:o:vyos:vyos:1.1.8:*:*:*:*:*:*:* Versions 1.1.8 Vulnerable ·VyOS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-18555
  2. 2026-10-03 Alias added: GHSA-2m72-4x6w-fqpx

References

Exploit 1

  • TI-2018-13121 A privilege escalation issue was discovered in VyOS 1.1.8. CVSS 3.1CRITICAL 9.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences