VulnerabilityAnalyzed
CVE-2023-41763
Microsoft Skype for Business Privilege Escalation Vulnerability
KEVMEDIUM 5.3EPSS 90.4%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 31 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Skype for Business Elevation of Privilege Vulnerability
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 90.35% probability · 100th percentile
- CISA KEV
- Listed 10 October 2023 · due 31 October 2023
- Weakness
- CWE-918
- Affected
- microsoft/skype for business server
- Source
- secure@microsoft.com
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-41763; https://nvd.nist.gov/vuln/detail/CVE-2023-41763
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763Patch, Vendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41763US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.