CVE-2023-41763 kev in the critical feed json
Skype for Business Elevation of Privilege Vulnerability
published 2023-10-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-46255
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Exploited
- added 2023-10-10
- epss
- 90.3%
- EPSS 90.3% chance of exploitation in 30 days, percentile 99.8%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
Skype for Business Elevation of Privilege Vulnerability
Patch / fix
cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Microsoft Skype for Business Server 2015 CU13 6.0.9319.869
- Microsoft Skype for Business Server 2019 CU7 7.0.246.530
Timeline
- Added to CISA KEV
- Published
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 3 y ago
- Patch by
- 2023-10-31 (3 y ago)
- Ransomware
- Not known
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Vendor, product
- Microsoft, Skype for Business
- CISA name
- Microsoft Skype for Business Privilege Escalation Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
90.28% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Skype for Business 2019 (SfB) - Blind Server-side Request Forgery nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | 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 |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected products
- Microsoft Skype for Business Server 2015 CU13
- Microsoft Skype for Business Server 2019 CU7
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2023-41763
vendor-advisory, patch
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41763
government-resource, us-government-resource
Sources
- CVE List CVE-2023-41763
- NVD CVE-2023-41763
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