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CVE-2023-41763

Microsoft Skype for Business Privilege Escalation

5.3 MEDIUMActively exploited (CISA KEV)EPSS 90.4%
  1. Published10 Oct 2023
  2. Added to CISA KEV10 Oct 2023
  3. Remediation due31 Oct 2023
Actively exploited (CISA KEV)

Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

Added to KEV: 10 Oct 2023Federal remediation due: 31 Oct 2023

Description

Skype for Business Elevation of Privilege Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

Microsoft Skype For Business Server2015 · 2019

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-41763 being actively exploited?

Yes. CVE-2023-41763 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 10 Oct 2023.

How severe is CVE-2023-41763?

CVE-2023-41763 has a CVSS 3.1 base score of 5.3, rated medium. EPSS estimates a 90.4% probability of exploitation.

Which products are affected by CVE-2023-41763?

Affected products include Microsoft Skype For Business Server.

How do I fix CVE-2023-41763?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-41763 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.