What is CVE-2018-8569?

CVE-2018-8569 is a high-severity vulnerability in Microsoft Yammer. CVSS score: 7.8/10. Published 2018-10-23.

How severe is CVE-2018-8569?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Microsoft Yammer

CVE-2018-8569

A remote code execution vulnerability exists in the Yammer desktop application due to the loading of arbitrary content, aka "Yammer Desktop Application Remote Code Execution Vulnerability." This affects Yammer Desktop App.

Published 2018-10-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.133 (96.3th percentile), scored 2026-10-03.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.133 · newest: 0.133 · change: 0.000

Affected products

Microsoft Yammer
Microsoft Yammer Desktop App — versions Yammer Desktop App

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8569 (Patch, Vendor Advisory)
www.securityfocus.com/bid/105681 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-8569?: CVE-2018-8569 is a high-severity vulnerability in Microsoft Yammer. CVSS score: 7.8/10. Published 2018-10-23.
How severe is CVE-2018-8569?: High severity. CVSS v3 base score is 7.8 out of 10.