CVE-2021-43940

7.8 highEPSS 0.3%

High (7.8) in atlassian. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)
CWE: CWE-427
Published: 2022-02-15
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atlassian:confluence_data_center
atlassian:confluence_server

References

https://jira.atlassian.com/browse/CONFSERVER-66550
https://jira.atlassian.com/browse/CONFSERVER-66550

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