ZEN Load Balancer 2.0/3.0-rc1 content2-2.cgi exec filelog os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in ZEN Load Balancer 2.0/3.0-rc1. The impacted element is the function exec of the file content2-2.cgi. Performing a manipulation of the argument filelog results in os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is known as CVE-2012-10039. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in ZEN Load Balancer 2.0/3.0-rc1. It has been classified as critical. This affects the function exec of the file content2-2.cgi. The manipulation of the argument filelog with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

ZEN Load Balancer versions 2.0 and 3.0-rc1 contain a command injection vulnerability in content2-2.cgi. The filelog parameter is passed directly into a backtick-delimited exec() call without sanitation. An authenticated attacker can inject arbitrary shell commands, resulting in remote code execution as the root user. ZEN Load Balancer is the predecessor of ZEVENET and SKUDONET. The affected versions (2.0 and 3.0-rc1) are no longer supported. SKUDONET CE is the current community-maintained successor.

The weakness was published by bcoles. The advisory is shared at web.archive.org. This vulnerability is uniquely identified as CVE-2012-10039 since 08/07/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/11/2025). MITRE ATT&CK project uses the attack technique T1202 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

Support

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/07/2025 CVE reserved
08/11/2025 +4 days Advisory disclosed
08/11/2025 +0 days VulDB entry created
08/11/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: web.archive.org
Researcher: bcoles
Status: Not defined

CVE: CVE-2012-10039 (🔒)
GCVE (CVE): GCVE-0-2012-10039
GCVE (VulDB): GCVE-100-319425

Entryinfo

Created: 08/11/2025 17:10
Changes: 08/11/2025 17:10 (68)
Complete: 🔍
Cache ID: 216::103

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