CVE-2026-70297 json
Skype for Business Remote Code Execution Vulnerability
published 29d ago modified yesterday also EUVD-2026-100138
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
Absolute path traversal in Skype for Business and Microsoft Lync allows an authorized attacker to execute code 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
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 29d ago
Exploit prediction
1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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-2026-70297
vendor-advisory, patch
Sources
- CVE List CVE-2026-70297
- NVD CVE-2026-70297
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