How severe is CVE-2019-19891?

CVE-2019-19891 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-19891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-19891?

CVE-2019-19891 primarily affects Mitel Sip-dect Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-19891?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-19891 published?

CVE-2019-19891 was published on 2020-01-13 and last updated on 2026-06-17.

CVE-2019-19891

CVE-2019-19891 is a medium-severity vulnerability in Mitel Sip-dect Firmware with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-327.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Mitel Sip-dect Firmware
Published: 2020-01-13
Last modified: 2026-06-17

Description

An encryption key vulnerability on Mitel SIP-DECT wireless devices 8.0 and 8.1 could allow an attacker to launch a man-in-the-middle attack. A successful exploit may allow the attacker to intercept sensitive information.

Frequently asked questions

What is CVE-2019-19891?: An encryption key vulnerability on Mitel SIP-DECT wireless devices 8.0 and 8.1 could allow an attacker to launch a man-in-the-middle attack. A successful exploit may allow the attacker to intercept sensitive information.
How severe is CVE-2019-19891?: CVE-2019-19891 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-19891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-19891?: CVE-2019-19891 primarily affects Mitel Sip-dect Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-19891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-19891 published?: CVE-2019-19891 was published on 2020-01-13 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:mitel:sip-dect_firmware:8.0:*:*:*:*:*:*:*
cpe:2.3:o:mitel:sip-dect_firmware:8.1:*:*:*:*:*:*:*

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