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Actively exploited

CVE-2024-41710 Mitel SIP Phones Argument Injection Vulnerability

Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones, including the 6970 Conference Unit, contain an argument injection vulnerability due to insufficient parameter sanitization during the boot process. Successful exploitation may allow an attacker to execute arbitrary commands within the context of the system.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch urgentlyCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 12 Feb 2025.
  • Rated Medium severity (CVSS 6.8, scored by CISA).
  • It has been in the catalogue for 632 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

A vulnerability in the Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones, including the 6970 Conference Unit, through R6.4.0.HF1 (R6.4.0.136) could allow an authenticated attacker with administrative privilege to conduct an argument injection attack, due to insufficient parameter sanitization during the boot process. A successful exploit could allow an attacker to execute arbitrary commands within the context of the system.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Mitel SIP Phones. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsCyber Essentials requires high and critical updates (CVSS 7.0 or above) within 14 days of release. Treat any exploited flaw the same way.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 5 Mar 2025 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Mitel Flaws

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CVE-2024-55550 · RansomwareMitel MiCollab Path Traversal VulnerabilityAdded 7 Jan 2025CVE-2024-41713 · RansomwareMitel MiCollab Path Traversal VulnerabilityAdded 7 Jan 2025CVE-2022-41223 · RansomwareMitel MiVoice Connect Code Injection VulnerabilityAdded 21 Feb 2023CVE-2022-40765 · RansomwareMitel MiVoice Connect Command Injection VulnerabilityAdded 21 Feb 2023CVE-2022-29499 · RansomwareMitel MiVoice Connect Data Validation VulnerabilityAdded 27 Jun 2022CVE-2022-26143MiCollab, MiVoice Business Express Access Control VulnerabilityAdded 25 Mar 2022

All 7 exploited Mitel vulnerabilities

Not Sure If You Are Exposed?

Our attack surface and vulnerability teams can check your internet-facing estate for CVE-2024-41710 and every other exploited flaw on the list.

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2024-41710
  3. CVE record: CVE-2024-41710
  4. FIRST EPSS
  5. mitel.com/-/media/mitel/file/pdf/support/security-advisories/security-bulletin_24-0019-001-v2.pdf
  6. mitel.com/support/security-advisories
  7. github.com/kwburns/CVE/blob/main/Mitel/6.3.0.1020/README.md
  8. mitel.com/support/security-advisories/mitel-product-security-advisory-24-0019