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CVE-2019-18863

MEDIUM

5.9

CVSS Score

Published: March 2, 2020 at 05:52 PM UTC

Updated: June 17, 2026 at 02:25 AM UTC

17 products affected across 1 vendor6940 Firmware6869I Firmware6930 Firmware

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Severity

MEDIUM5.9

Exploit prediction

EPSS 0.5%

Description

A key length vulnerability in the implementation of the SRTP 128-bit key on Mitel 6800 and 6900 SIP series phones, versions 5.1.0.2051 SP2 and earlier, could allow an attacker to launch a man-in-the-middle attack when SRTP is used in a call. A successful exploit may allow the attacker to intercept sensitive information.

Affected

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

6863I Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6863i (same device)

6865I Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6865i (same device)

6867I Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6867i (same device)

6869I Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

6873I Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6873i (same device)

6920 Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6920 (same device)

6930 Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6930 (same device)

6940 Firmware · Mitel

95%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6940 (same device)

6869I Sip · Mitel

75%

v < 5.1.0.20515.1.0.2051 5.1.0.2051 sp2_hf2

Affected range stops below 5.1.0.2051, so it looks safe — our inference, not a vendor statement

mitel-6869i (same device)

6863I · Miteldevice

80%

All versions

Remediation

No guide yet

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

Patch and advisory references

References (2)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://www.mitel.com/support/security-advisories

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-19-0006

CVSS

5.9MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-326

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