CVE-2022-29855

MEDIUM
6.8
CVSS Score
Published: May 11, 2022 at 07:12 PM UTC
Updated: June 17, 2026 at 04:40 AM UTC
18 products affected across 1 vendor6869I Sip Firmware6940 Sip Firmware6930 Sip Firmware

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.8%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.1.0.80176.0.0.368 ≤ v < 6.1.0.171
Affected range stops below 5.1.0.8017, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.0.171, so it looks safe — our inference, not a vendor statement
mitel-6865i-sip (same device)
v < 5.1.0.80176.0.0.368 ≤ v < 6.1.0.171
Affected range stops below 5.1.0.8017, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.0.171, so it looks safe — our inference, not a vendor statement
mitel-6867i-sip (same device)
v < 5.1.0.80176.0.0.368 ≤ v < 6.1.0.171
Affected range stops below 5.1.0.8017, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.0.171, so it looks safe — our inference, not a vendor statement
mitel-6869i-sip (same device)
v < 5.1.0.80176.0.0.368 ≤ v < 6.1.0.171
Affected range stops below 5.1.0.8017, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.0.171, so it looks safe — our inference, not a vendor statement
mitel-6873i-sip (same device)
v ≤ 5.1.0.80166.0.0.368 ≤ v ≤ 6.1.0.165
mitel-6905-sip (same device)
v ≤ 5.1.0.80166.0.0.368 ≤ v ≤ 6.1.0.165
mitel-6910-sip (same device)
v ≤ 5.1.0.80166.0.0.368 ≤ v ≤ 6.1.0.165
mitel-6920-sip (same device)
v < 5.1.0.80176.0.0.368 ≤ v < 6.1.0.171
Affected range stops below 5.1.0.8017, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.0.171, so it looks safe — our inference, not a vendor statement
mitel-6930-sip (same device)
v < 5.1.0.80176.0.0.368 ≤ v < 6.1.0.171
Affected range stops below 5.1.0.8017, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.0.171, so it looks safe — our inference, not a vendor statement
mitel-6940-sip (same device)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
PHYSICAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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