CVE-2021-47734

HIGH EPSS 49.0%
Published Dec 23, 20256mo ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
High
Find Similar
Published Dec 23, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

Description

CMSimple 5.4 contains an authenticated local file inclusion vulnerability that allows remote attackers to manipulate PHP session files and execute arbitrary code. Attackers can leverage the vulnerability by changing the functions file path and uploading malicious PHP code through session file upload mechanisms.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
49.0% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-98

Affected Products 1

VendorProductVersionRange
cmsimplecmsimple5.4any

References 3

  • cmsimple.org https://www.cmsimple.org/en/
    Product
  • exploit-db.com https://www.exploit-db.com/exploits/50547
    Exploit
  • vulncheck.com https://www.vulncheck.com/advisories/cmsimple-authenticated-local-file-inclusion-remote-code-execution
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.