CVE-2026-4048
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedOS 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysisUser input reaches a command interpreter without being fully separated from the command itself, so an attacker can append instructions of their own. Because those run with the application's privileges, it frequently means control of the host. The lasting fix is to avoid constructing commands from input — call APIs directly and pass arguments as data, never as concatenated strings.
General guidance for the command injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 7.2.63.1< 7.2.63.1< 7.2.54.17< 7.2.63.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped7.2.54.177.2.63.1
LoadMaster: upgrade to 7.2.54.17 or 7.2.63.1 (depending on branch); Connection Manager For Objectscale: upgrade to 7.2.63.1; Ecs Connection Manager: upgrade to 7.2.63.1
- Identify the current version of the affected product (LoadMaster, Connection Manager For Objectscale, or Ecs Connection Manager) via the UI or command line interface
- Download the updated version from the official Progress website or via the vendor support portal
- For LoadMaster: upgrade to version 7.2.54.17 or later (if on the 7.2.54 branch), or upgrade to version 7.2.63.1 or later (if on the 7.2.63 branch)
- For Connection Manager For Objectscale: upgrade to version 7.2.63.1 or later
- For Ecs Connection Manager: upgrade to version 7.2.63.1 or later
- Follow Progress's standard upgrade procedure for the specific product, which typically involves uploading the new firmware via the LoadMaster UI under Certificates & Security -> LoadMaster Updates or equivalent
- After upgrade, verify the new version is installed and test that the WAF rule file upload functionality works correctly with sanitized input
- Ensure the attacker no longer has 'All' permissions unless absolutely necessary; follow the principle of least privilege
Generated from the published advisory — verify against the referenced sources before acting.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-4048 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-4048 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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