LoadMaster: Improper Neutralization of Special Elements used in a Command
CVE-2026-4048 is a high-severity improper neutralization of special elements used in a command vulnerability in LoadMaster from Progress Software, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. The record lists version V7.2.63.0 as the first without the flaw, so updating LoadMaster to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 2.13% chance of exploitation within 30 days, higher than 82% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update LoadMaster to V7.2.63.0 or a later version.
- Update ECS Connections Manager to V7.2.63.0 or a later version.
- Update Object Scale Connection Manager to V7.2.63.0 or a later version.
- Read the advisory on community.progress.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Progress Software | LoadMaster | V7.1.20.0 up to, but not including, V7.2.63.0 | V7.2.63.0 |
| Progress Software | ECS Connections Manager | V7.2.49.0 up to, but not including, V7.2.63.0 | V7.2.63.0 |
| Progress Software | Object Scale Connection Manager | V7.2.62.0 up to, but not including, V7.2.63.0 | V7.2.63.0 |
| Progress Software | MOVEit WAF | V7.2.62.0 up to, but not including, V7.2.63.0 | V7.2.63.0 |
| Progress Software | Connection Manager For Objectscale | before 7.2.63.1 | 7.2.63.1 |
| Progress Software | Ecs Connection Manager | before 7.2.63.1 | 7.2.63.1 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- HighAdministrator-level access is required first.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.4 | High | CNA (progress.com) |
| CVSS 3.1 | 7.2 | High | NVD |
Official 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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of Special Elements used in a Command
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
How developers prevent this class of flaw
- If at all possible, use library calls rather than external processes to recreate the desired functionality.
- If possible, ensure that all external commands called from the program are statically created.
- Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.
More Improper Neutralization of Special Elements used in a Command vulnerabilities (CWE-77)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in LoadMaster
- 8.0 High severity
- 8.0 High severity
- 8.4 High severity
- 8.4 High severity
- 8.4 High severity
- 9.8 Critical severity
Progress LoadMaster Command Injection Exploited
Recent Improper Neutralization of Special Elements used in a Command vulnerabilities
- 7.2 High severity
- 7.2 High severity
- 7.2 High severity
- 8.8 High severity
- 8.8 High severity
- 7.2 High severity
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