How severe is CVE-2019-0624?

CVE-2019-0624 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-0624 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-0624?

CVE-2019-0624 affects Microsoft Skype For Business. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-0624?

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

When was CVE-2019-0624 published?

CVE-2019-0624 was published on 2019-01-17 and last updated on 2026-06-17.

CVE-2019-0624

CVE-2019-0624 is a medium-severity vulnerability in Microsoft Skype For Business with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Skype For Business
Published: 2019-01-17
Last modified: 2026-06-17

Description

A spoofing vulnerability exists when a Skype for Business 2015 server does not properly sanitize a specially crafted request, aka "Skype for Business 2015 Spoofing Vulnerability." This affects Skype.

Frequently asked questions

What is CVE-2019-0624?: A spoofing vulnerability exists when a Skype for Business 2015 server does not properly sanitize a specially crafted request, aka "Skype for Business 2015 Spoofing Vulnerability." This affects Skype.
How severe is CVE-2019-0624?: CVE-2019-0624 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-0624 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-0624?: CVE-2019-0624 affects Microsoft Skype For Business. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-0624?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-0624 published?: CVE-2019-0624 was published on 2019-01-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:skype_for_business:2015:cu8:*:*:*:*:*:*

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