How severe is CVE-2023-41763?

CVE-2023-41763 has a CVSS 3.1 base score of 5.3 (MEDIUM). EPSS estimates a 90.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2023-41763: Skype for Business Elevation of Privilege

CISA Known Exploited Vulnerabilities

Microsoft Skype for Business Privilege Escalation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-10-10

Remediation due

2023-10-31

Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-41763; https://nvd.nist.gov/vuln/detail/CVE-2023-41763

Description

Skype for Business Elevation of Privilege Vulnerability

Severity

CVSS 3.1 · CNA5.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impactpartial

Affected Products

Vendor	Product	Affected versions
Microsoft	Skype for Business Server 2015 CU13	9319.0 to <6.0.9319.869
Microsoft	Skype for Business Server 2019 CU7	2046.0 to <7.0.246.530

References

1 Links

Vendor advisories

Skype for Business Elevation of Privilege Vulnerability

Record Details

Published

2023-10-10

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.