CVE-2026-4048: CWE-77 in Progress Software LoadMaster
OS Command Injection Remote Code Execution Vulnerability in UI in Progress ADC Products allows an authenticated attacker with “All” permissions to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in a custom WAF rule file during the file upload process.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-4048) in Progress Software LoadMaster version 7.1.20.0 involves OS command injection due to improper sanitization of input in the UI when uploading custom WAF rule files. An attacker with authenticated access and 'All' permissions can leverage this flaw to execute arbitrary commands on the appliance, potentially leading to full compromise. The CVSS 3.1 score is 8.4, reflecting high impact on confidentiality, integrity, and availability. No patch or official fix has been documented yet.
Potential Impact
Successful exploitation allows an authenticated attacker with full permissions to execute arbitrary OS commands on the LoadMaster appliance. This can lead to complete compromise of the device, affecting confidentiality, integrity, and availability of the system and potentially the network it protects.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the LoadMaster UI to trusted administrators only and carefully control permissions to prevent unauthorized users from uploading custom WAF rule files.
CVE-2026-4048: CWE-77 in Progress Software LoadMaster
Description
OS Command Injection Remote Code Execution Vulnerability in UI in Progress ADC Products allows an authenticated attacker with “All” permissions to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in a custom WAF rule file during the file upload process.
CVSS v3.1
Score 8.4high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-4048) in Progress Software LoadMaster version 7.1.20.0 involves OS command injection due to improper sanitization of input in the UI when uploading custom WAF rule files. An attacker with authenticated access and 'All' permissions can leverage this flaw to execute arbitrary commands on the appliance, potentially leading to full compromise. The CVSS 3.1 score is 8.4, reflecting high impact on confidentiality, integrity, and availability. No patch or official fix has been documented yet.
Potential Impact
Successful exploitation allows an authenticated attacker with full permissions to execute arbitrary OS commands on the LoadMaster appliance. This can lead to complete compromise of the device, affecting confidentiality, integrity, and availability of the system and potentially the network it protects.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the LoadMaster UI to trusted administrators only and carefully control permissions to prevent unauthorized users from uploading custom WAF rule files.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ProgressSoftware
- Date Reserved
- 2026-03-12T12:17:05.403Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e631a519fe3cd2cdff2612
Added to database: 4/20/2026, 2:01:09 PM
Last enriched: 4/28/2026, 5:59:51 AM
Last updated: 6/4/2026, 10:55:14 AM
Views: 57
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