What is CVE-2021-43940?

CVE-2021-43940 is a high-severity vulnerability in Atlassian Confluence Data Center, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2022-02-15.

How severe is CVE-2021-43940?

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

Vulnerability in Atlassian Confluence Data Center

CVE-2021-43940

Affected versions of Atlassian Confluence Server and Data Center allow authenticated local attackers to achieve elevated privileges on the local system via a DLL Hijacking vulnerability in the Confluence installer. This vulnerability only affects installations of Confluence Server and Data Center on Windows. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.

EPSS: 0.003 (25.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Atlassian Confluence Data Center — versions unspecified, 7.5.0
Atlassian Confluence_data_center
Atlassian Confluence Server — versions unspecified, 7.5.0
Atlassian Confluence_server
Microsoft Windows

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

security@atlassian.com (x_refsource_MISC, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2021-43940?: CVE-2021-43940 is a high-severity vulnerability in Atlassian Confluence Data Center, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2022-02-15.
How severe is CVE-2021-43940?: High severity. CVSS v3 base score is 7.8 out of 10.