CVE-2020-36233

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-02-18 · updated 2026-06-17
Weakness: CWE-276

Description

The Microsoft Windows Installer for Atlassian Bitbucket Server and Data Center before version 6.10.9, 7.x before 7.6.4, and from version 7.7.0 before 7.10.1 allows local attackers to escalate privileges because of weak permissions on the installation directory.

Affected products

Atlassian Bitbucket Server: before 6.10.9; from 7.0.0 before 7.6.4; from 7.7.0 before 7.10.1 — fixed in 6.10.9, 7.10.1, 7.6.4

How to fix

Upgrade to a fixed version: Atlassian Bitbucket Server 6.10.9, 7.10.1, 7.6.4. Check the vendor advisory for mitigations.

References

https://jira.atlassian.com/browse/BSERV-12753
https://www.kb.cert.org/vuls/id/240785
https://jira.atlassian.com/browse/BSERV-12753
https://www.kb.cert.org/vuls/id/240785

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