# CERT-FR Warns of Mitel RCE Flaw

Published: 2026-11-06 · Severity: severe · Sectors: Telecommunications
Canonical: https://vorant.io/reports/70b95143-077e-5f6c-92b8-b4817e00aeb3/cert-fr-warns-of-mitel-rce-flaw
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> A remote code execution vulnerability affects multiple Mitel and OpenScape products; CERT-FR advises patching per vendor bulletin.

Source: cert.cyber.gouv.fr — https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1477

## What to check

- Applies to: The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation: CISA lists CVE-2026-111497 as exploited in the wild.

CERT-FR issued an advisory covering a vulnerability in several Mitel and Unify OpenScape products that allows an attacker to achieve remote code execution. The affected product list spans Mitel Gestion de version 10.6.0.7 and earlier, MiVoice Business Solution Virtual Instance 2.1.0.9 and earlier, OpenScape Contact Center 12R0 through 12R0FR7, OpenScape Endpoint Management 1R2.5.1 and earlier, OpenScape SBC versions prior to 11R3.4.5 (patch availability not yet announced), OpenScape SESAP 2R1.1.9 and earlier, and OpenScape Xpert 9R0.2.0 and earlier.

The issue is tracked as CVE-2026-111497 and detailed in Mitel Product Security Advisory MISA-2026-0010, published 28 October 2026. No information is provided on active exploitation in the wild. CERT-FR's guidance is to apply vendor-supplied patches referenced in the Mitel security bulletin; for OpenScape SBC, no fix was yet available at time of publication, so affected organizations should monitor the vendor bulletin for updates and consider compensating controls such as network segmentation or restricting access to management interfaces until a patch is released.

Defenders operating any of the listed Mitel or OpenScape telephony/UC products should inventory their deployed versions against the advisory, prioritize patching given the remote code execution impact, and monitor vendor channels for the OpenScape SBC fix.

## Mentioned in this report

- Vulnerabilities: CVE-2026-111497 (KEV)

Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1477

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