SARA / Free Tools / CVE / CVE-2023-36780

CVE-2023-36780 — Skype for Business Remote Code Execution Vulnerability

Skype for Business Remote Code Execution Vulnerability

CVSS

7.2 HIGH

EPSS

0.70% (top 28.20%)

CWE

CWE-426

Published

2023-10-10T17:08:11.540Z

Last modified

2025-04-14T22:46:43.180Z

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

01What is this vulnerability?

Skype for Business Remote Code Execution Vulnerability

Vendor	Product	Versions
Microsoft	Skype for Business Server 2019 CU7	2046.0
Microsoft	Skype for Business Server 2015 CU13	9319.0

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

msrc.microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36780

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