What is CVE-2023-36786?

CVE-2023-36786 is a high-severity vulnerability in Microsoft Skype For Business Server, classified under Absolute Path Traversal. CVSS score: 7.2/10. Published 2023-10-10.

How severe is CVE-2023-36786?

High severity. CVSS v3 base score is 7.2 out of 10.

Path Traversal in Microsoft Skype For Business Server

CVE-2023-36786

Skype for Business Remote Code Execution Vulnerability

Published 2023-10-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.026 (85.0th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.026 · change: +0.001

Affected products

Microsoft Skype For Business Server — versions 2015, 2019
Microsoft Skype For Business Server 2015 Cu13 — versions 9319.0
Microsoft Skype For Business Server 2019 Cu7 — versions 2046.0

Weakness classification (CWE)

CWE-36 — Absolute Path Traversal

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36786 (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-36786?: CVE-2023-36786 is a high-severity vulnerability in Microsoft Skype For Business Server, classified under Absolute Path Traversal. CVSS score: 7.2/10. Published 2023-10-10.
How severe is CVE-2023-36786?: High severity. CVSS v3 base score is 7.2 out of 10.