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TI-2018-00397 Aliases CVE-2018-0438GHSA-5jrx-2w68-hx2j

Cisco Umbrella Enterprise Roaming Client Privilege Escalation Vulnerability

Priority LOW 39CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
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-269.

Summary

A vulnerability in the Cisco Umbrella Enterprise Roaming Client (ERC) could allow an authenticated, local attacker to elevate privileges to Administrator. To exploit the vulnerability, the attacker must authenticate with valid local user credentials. This vulnerability is due to improper implementation of file system permissions, which could allow non-administrative users to place files within restricted directories. An attacker could exploit this vulnerability by placing an executable file within the restricted directory, which when executed by the ERC client, would run with Administrator privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01374 72nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Umbrellaall versions—No fix listedCNA
  • Cisco Umbrella VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:umbrella_enterprise_roaming_client:*:*:*:*:*:*:*:*before 2.1.127VulnerableCisco
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:cisco:umbrella_enterprise_roaming_client:*:*:*:*:*:*:*:* Versions before 2.1.127 Vulnerable ·Cisco
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0438
  2. 2026-10-03 Alias added: GHSA-5jrx-2w68-hx2j

References

Exploit 1

Advisory 1

  • TI-2018-00396 Cisco Umbrella Enterprise Roaming Client and Enterprise Roaming Module Privilege Escalation Vulnerability CVSS 3.0HIGH 7.8

Sources

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