CVE-2026-83746 json
Skype for Business Elevation of Privilege Vulnerability
published 2026-10-13 26 d ago modified 2026-10-31 8 d ago also EUVD-2026-100141
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
Absolute path traversal in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
Patch / fix
- Microsoft Skype for Business Server 2015 CU13 6.0.9319.886
- Microsoft Skype for Business Server 2019 CU8 7.0.2046.583
- Microsoft Skype for Business Server Subscription Edition CU1 7.0.2046.889
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 26 d ago
Exploit prediction
1.15% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
Affected products
- Microsoft Skype for Business Server 2015 CU13
- Microsoft Skype for Business Server 2019 CU8
- Microsoft Skype for Business Server Subscription Edition CU1
Classification
- Weakness
-
- CWE-36 Absolute Path Traversal
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-83746
vendor-advisory, patch
Sources
- CVE List CVE-2026-83746
- NVD CVE-2026-83746
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