CVE-2013-4211Public exploitNetwork attack vector

Remote code execution via backdoored Flowplayer library

Published Feb 14, 2020 · Updated Aug 6, 2024

Code execution in OpenX Ad Server 2.8.10 allows remote attackers to execute arbitrary PHP code through a backdoored Flowplayer library. The file flowplayer-3.1.1.min.js contains embedded PHP backdoor logic that evaluates attacker-supplied code when reached by web requests. No authentication is required, and execution occurs with the web server account's privileges, enabling compromise of hosted application data and services.

CVSS severity9.8
Critical
EPSS probability70.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code execution in OpenX Ad Server 2.8.10 allows remote attackers to execute arbitrary PHP code through a backdoored Flowplayer library. The file flowplayer-3.1.1.min.js contains embedded PHP backdoor logic that evaluates attacker-supplied code when reached by web requests. No authentication is required, and execution occurs with the web server account's privileges, enabling compromise of hosted application data and services.

The record

CVE
CVE-2013-4211
Published
Feb 14, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo