CVE-2019-18863 json
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…
published 2020-03-02 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8558
- cvss
- 5.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- mitel 6863i_firmware 5.1.0.2051
- mitel 6865i_firmware 5.1.0.2051
- mitel 6867i_firmware 5.1.0.2051
- mitel 6869i_firmware 5.1.0.2051
- mitel 6873i_firmware 5.1.0.2051
- mitel 6920_firmware 5.1.0.2051
- mitel 6930_firmware 5.1.0.2051
- mitel 6940_firmware 5.1.0.2051
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-326 Inadequate Encryption Strength
References
-
mitel.com
/support/security-advisories
vendor-advisory
-
mitel.com
/support/security-advisories/mitel-product-security-advisory-19-0006
vendor-advisory
Sources
- CVE List CVE-2019-18863
- NVD CVE-2019-18863
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