CVE-2022-29855

moderate-risk
Published 2022-05-11

Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have "undocumented functionality." A vulnerability in Mitel 6800 Series and 6900 Series SIP phones excluding 6970, versions 5.1 SP8 (5.1.0.8016) and earlier, and 6.0 (6.0.0.368) through 6.1 HF4 (6.1.0.165), could allow a unauthenticated attacker with physical access to the phone to gain root access due to insufficient access control for test functionality during system startup. A successful exploit could allow access to sensitive information and code execution.

Do I need to act?

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0.35% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.8/10 Medium
PHYSICAL / LOW complexity

Affected Products (9)

Affected Vendors

Mitel

References (10)

Exploit http://packetstormsecurity.com/files/167547/Mitel-6800-6900-Series-SIP-Phones-Ba...
Exploit http://seclists.org/fulldisclosure/2022/Jun/32
Vendor Advisory https://www.mitel.com/support/security-advisories
Vendor Advisory https://www.mitel.com/support/security-advisories/mitel-product-security-advisor...
Third Party Advisory https://www.syss.de/pentest-blog/undocumented-functionality-backdoor-in-mitel-de...
Exploit http://packetstormsecurity.com/files/167547/Mitel-6800-6900-Series-SIP-Phones-Ba...
Exploit http://seclists.org/fulldisclosure/2022/Jun/32
Vendor Advisory https://www.mitel.com/support/security-advisories
Vendor Advisory https://www.mitel.com/support/security-advisories/mitel-product-security-advisor...
Third Party Advisory https://www.syss.de/pentest-blog/undocumented-functionality-backdoor-in-mitel-de...
38
/ 100
moderate-risk
Severity 22/34 · High
Exploitability 1/34 · Minimal
Exposure 15/34 · Moderate