CVE-2023-41763
Skype for Business Elevation of Privilege Vulnerability
- Medium 5.3
- Exploited: added to CISA KEV 10 Oct 2023
Description
Skype for Business Elevation of Privilege Vulnerability
Key facts
- Published
- 10 Oct 2023
- Last changed
- 21 Oct 2025
- Assigned by
- microsoft
- KEV added
- 10 Oct 2023
- KEV fix due
- 31 Oct 2023
- EPSS
- 90.282% likely to be exploited in the next 30 days, higher than 99.802% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: partial
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 5.3CVSS 3.1, Mediumfrom the CNA (microsoft)
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
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Skype for Business Server 2015 CU13 |
|
| Microsoft | Skype for Business Server 2019 CU7 |
|
Timeline
- 10 Oct 2023 CVE-2023-41763 added to CISA KEV
- 10 Oct 2023 Added to the CISA KEV catalogue
- 10 Oct 2023 Published