HOMEVULNERABILITIESCVE-2020-36233
HIGH

CVE-2020-36233

CWE-276Published: February 18, 2021· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-36233 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Atlassian1 product(s)
bitbucket
Microsoft1 product(s)
windows
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (4)

→
https://jira.atlassian.com/browse/BSERV-12753Issue Tracking · Vendor Advisory
→
https://www.kb.cert.org/vuls/id/240785Third Party Advisory · US Government Resource
→
https://jira.atlassian.com/browse/BSERV-12753Issue Tracking · Vendor Advisory
→
https://www.kb.cert.org/vuls/id/240785Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2020-36233
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-276
CISA KEVNo
Affected2 vendor(s)
PublishedFeb 18, 2021

Related CVEs (CWE-276)

CVE-2023-29131
10.0
CVE-2022-42150
10.0
CVE-2020-29492
10.0
CVE-2025-40585
9.9
CVE-2019-19896
9.9
CVE-2024-56525
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-36233 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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