SSRF in Microsoft Skype For Business Server 2015 Cu13
CVE-2023-41763
Skype for Business Elevation of Privilege Vulnerability
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.165 (95.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: 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.
Affected products
- Microsoft Skype For Business Server 2015 Cu13 — versions 9319.0
- Microsoft Skype For Business Server 2019 Cu7 — versions 2046.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- Skype for Business Elevation of Privilege Vulnerability (vendor-advisory)
Frequently asked questions
- What is CVE-2023-41763?
- CVE-2023-41763 is a medium-severity vulnerability in Microsoft Skype For Business Server 2015 Cu13, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2023-10-10.
- How severe is CVE-2023-41763?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2023-41763 known to be exploited?
- Yes. CVE-2023-41763 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-10-10), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.