CVE-2019-19891Network attack vector

Sensitive-information interception via encryption-key flaw

Published Jan 13, 2020 · Updated Aug 5, 2024

Risky cryptography in Mitel SIP-DECT 8.0 and 8.1 allows man-in-the-middle attackers to intercept sensitive information. Mitel identifies an encryption-key flaw but does not disclose the affected key operation or explain how untrusted network input defeats it. Exploitation requires prior compromise of the internal wired corporate network and a man-in-the-middle position, and the documented consequence is interception of sensitive information.

CVSS severity5.9
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Risky cryptography in Mitel SIP-DECT 8.0 and 8.1 allows man-in-the-middle attackers to intercept sensitive information. Mitel identifies an encryption-key flaw but does not disclose the affected key operation or explain how untrusted network input defeats it. Exploitation requires prior compromise of the internal wired corporate network and a man-in-the-middle position, and the documented consequence is interception of sensitive information.

The record

CVE
CVE-2019-19891
Published
Jan 13, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-327, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
5.9NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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