High severity · published Sep 27, 2021
CVE-2021-40097
An issue was discovered in Concrete CMS through 8.5.5
8.8
CVSS
2.5%
EPSS
No
On KEV
Description
An issue was discovered in Concrete CMS through 8.5.5. Authenticated path traversal leads to to remote code execution via uploaded PHP code, related to the bFilename parameter.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Concrete Cms · Concretecms
through 8.5.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40097
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40097
Release Notes
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes
Permissions Required
https://hackerone.com/reports/1102067
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