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.

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.

EPSS: 0.017 (74.4th percentile) — read the EPSS interpretation.

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.

Affected products

Atlassian Companion
Atlassian Companion App — versions unspecified

References

security@atlassian.com (x_refsource_MISC, Vendor Advisory)

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.