HOMEVULNERABILITIESCVE-2020-12873
HIGH

CVE-2020-12873

CWE-74Published: February 19, 2021· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

An issue was discovered in Alfresco Enterprise Content Management (ECM) before 6.2.1. A user with privileges to edit a FreeMarker template (e.g., a webscript) may execute arbitrary Java code or run arbitrary system commands with the same privileges as the account running Alfresco.

NVD Source

Technical Analysis

CVE-2020-12873 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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 8.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

Atlassian1 product(s)
alfresco enterprise content management
Source: NVD CPE · 1 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://issues.alfresco.com/jira/browse/MNT-21510
ADVISORYhttps://securitylab.github.com/advisories/GHSL-2020-039-alfresco
ADVISORYhttps://issues.alfresco.com/jira/browse/MNT-21510
ADVISORYhttps://securitylab.github.com/advisories/GHSL-2020-039-alfresco

All References (4)

→
https://issues.alfresco.com/jira/browse/MNT-21510Issue Tracking · Permissions Required · Vendor Advisory
→
https://securitylab.github.com/advisories/GHSL-2020-039-alfrescoThird Party Advisory
→
https://issues.alfresco.com/jira/browse/MNT-21510Issue Tracking · Permissions Required · Vendor Advisory
→
https://securitylab.github.com/advisories/GHSL-2020-039-alfrescoThird Party Advisory

Quick Facts

CVE IDCVE-2020-12873
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-74
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 19, 2021

Related CVEs (CWE-74)

CVE-2026-56699
10.0
CVE-2022-24760
10.0
CVE-2026-44182
10.0
CVE-2023-30547
10.0
CVE-2024-38366
10.0
CVE-2014-8423
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-12873 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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