Vulnerability in Atlassian Companion

CVE-2020-4020

The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows remote attackers, who control a Confluence Server instance that the Companion App is connected to, execute arbitrary .exe files via a Protection Mechanism Failure.

Published · last modified .

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: 0.017 (75.9th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-4020: held from 0.017 to 0.017.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

References

Frequently asked questions

What is CVE-2020-4020?
CVE-2020-4020 is a high-severity vulnerability in Atlassian Companion. CVSS score: 7.2/10. Published 2020-06-01.
How severe is CVE-2020-4020?
High severity. CVSS v3 base score is 7.2 out of 10.