What is CVE-2026-70297?

CVE-2026-70297 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Skype for Business Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-70297 cover?

CVE-2026-70297 covers the following CVE IDs: CVE-2026-70297. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-70297?

CVE-2026-70297 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-70297?

CVE-2026-70297 affects 3 products, including: Skype for Business Server 2015 CU13; Skype for Business Server 2019 CU8; Skype for Business Server Subscription Edition CU1.

CVE-2026-70297HighCVSS 8.8

Skype for Business Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 13, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-70297 →

📋 Description

Absolute path traversal in Skype for Business and Microsoft Lync allows an authorized attacker to execute code over a network.

🎯 Affected products3

Skype for Business Server 2015 CU13
Skype for Business Server 2019 CU8
Skype for Business Server Subscription Edition CU1

✅ Remediation

KB5131692 (Security Update) — fixed build 7.0.2046.889 KB5132779 (Security Update) — fixed build 6.0.9319.886 KB5131693 (Security Update) — fixed build 7.0.2046.583

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70297
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108874
referencehttps://support.microsoft.com/help/5131692
referencehttps://support.microsoft.com/help/5132779
referencehttps://support.microsoft.com/help/5131693