CVE-2018-25353

Status: DeferredHigh (8.7)—

Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the blacklist filter and execute arbitrary code.

CVSS

Version: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
Base score: 8.7

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.45%
Percentile among all scored CVEs: 37
Score date: 10/4/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement45 %
Primary impactT1059 Command and Scripting Interpreterexecution75 %
Secondary impactT1078 Valid Accountsstealth · persistence · privilege escalation · initial access55 %

Carga arbitraria de archivos por usuario autenticado (PR:L) con bypass de restricciones; sin embargo, requiere acceso previo (credenciales de editor). La ejecución de código se logra mediante extensiones obfuscadas (php71, php53).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Disable or Remove Feature or Program Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training

Affected technologies (2)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Redaxo — Mediapool^AI Redaxo — Redaxo CMS^AI

CWEs

CWE-863

References

Raw JSON (NVD)

Show

{
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  "published": "2026-05-23T19:16:55.510",
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      "url": "https://redaxo.org",
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      "url": "https://redaxo.org/download/redaxo/5.5.1.zip",
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      "url": "https://www.exploit-db.com/exploits/44891",
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      "value": "Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the blacklist filter and execute arbitrary code."
    },
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    }
  ],
  "lastModified": "2026-07-23T17:10:00.123",
  "sourceIdentifier": "disclosure@vulncheck.com"
}