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TI-2020-09958 Aliases CVE-2020-12456GHSA-jrg3-99px-r4mp

A remote code execution vulnerability in Mitel MiVoice Connect Client before…

Priority MEDIUM 44CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A remote code execution vulnerability in Mitel MiVoice Connect Client before 214.100.1223.0 could allow an attacker to execute arbitrary code in the chat notification window, due to improper rendering of chat messages. A successful exploit could allow an attacker to steal session cookies, perform directory traversal, and execute arbitrary scripts in the context of the Connect client.

Why it matters now

EPSS 0.03061 87th percentileScored 2026-11-07
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:a:mitel:mivoice_connect_client:*:*:*:*:*:*:*:*before 214.100.1223.0VulnerableMitel
  • cpe:2.3:a:mitel:mivoice_connect_client:*:*:*:*:*:*:*:* Versions before 214.100.1223.0 Vulnerable ·Mitel

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-12456
  2. 2026-10-03 Alias added: GHSA-jrg3-99px-r4mp

References

Advisory 2

  • TI-2020-08311 A weak encryption vulnerability in Mitel MiVoice Connect Client before 214.100.1214.0… CVSS 3.1CRITICAL 9.8

Sources

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