CVEs / CVE-2023-41763
CVE-2023-41763: Microsoft Skype for Business Privilege Escalation Vulnerability
- Known exploited in the CISA KEV catalog since 10 Oct 2023
- medium 5.3 CVSS 3.1 (from the CNA)
- EPSS 90.5% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.
Description
Skype for Business Elevation of Privilege Vulnerability
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Skype for Business Server 2015 CU13 | from 9319.0, before 6.0.9319.869 | 6.0.9319.869 |
| Microsoft Skype for Business Server 2019 CU7 | from 2046.0, before 7.0.246.530 | 7.0.246.530 |
Exploitation
| In CISA KEV since | 10 Oct 2023 |
|---|---|
| Due date for US federal agencies | 31 Oct 2023 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-918 |
References
- CVE-2023-41763 on NVD
- CVE-2023-41763 in the CISA KEV catalog
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-41763 (cited by CISA)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41763 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.