CVE tracker / CVE-2026-83746

CVE-2026-83746

CVE-2026-83746 is the Skype for Business Elevation of Privilege Vulnerability. Microsoft rates it Important, CVSS 8.1. It is not in CISA's Known Exploited Vulnerabilities catalog. Published October 13, 2026.

Risk summary

HighElevation of Privilege
8.1
CVSS v3 base
1.1%
EPSS: chance of exploitation in 30 days
High
Severity
Important
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Absolute path traversal in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.”

How to fix it

Microsoft lists 3 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-36: Absolute Path Traversal
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
October 13, 2026
Last revised
October 13, 2026

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.