How severe is CVE-2019-1490?

CVE-2019-1490 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-2019-1490 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-2019-1490?

CVE-2019-1490 affects Microsoft Skype For Business. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-1490?

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

When was CVE-2019-1490 published?

CVE-2019-1490 was published on 2019-12-10 and last updated on 2026-06-17.

CVE-2019-1490

CVE-2019-1490 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-74.

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-74
Affected product: Microsoft Skype For Business
Published: 2019-12-10
Last modified: 2026-06-17

Description

A spoofing vulnerability exists when a Skype for Business Server does not properly sanitize a specially crafted request, aka 'Skype for Business Server Spoofing Vulnerability'.

Frequently asked questions

What is CVE-2019-1490?: A spoofing vulnerability exists when a Skype for Business Server does not properly sanitize a specially crafted request, aka 'Skype for Business Server Spoofing Vulnerability'.
How severe is CVE-2019-1490?: CVE-2019-1490 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-2019-1490 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-2019-1490?: CVE-2019-1490 affects Microsoft Skype For Business. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-1490?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-1490 published?: CVE-2019-1490 was published on 2019-12-10 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1490

Affected products (1)

cpe:2.3:a:microsoft:skype_for_business:2019:cumulative_update_2:*:*:*:*:*:*

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