CVE Alert: CVE-2025-11657 – ProjectsAndPrograms – School Management System

Risk verdict

High risk: unauthenticated remote file upload in a web app with public exploit details could enable abuse such as webshell deployment or local impact; treat as a priority concern.

Why this matters

An attacker can upload arbitrary files to the server via createNotice.php, potentially defacing notices or gaining footholds if uploaded content is executed. Even with modest impact metrics, remote, unauthenticated access combined with public exploit visibility raises the likelihood of automated abuse and persistent access on affected deployments.

Most likely attack path

No user interaction required; a remote attacker submits a file payload through the File parameter to /assets/createNotice.php, bypassing basic checks. If the server treats uploaded content as executable, a webshell or other malicious payload could be invoked, enabling further access or disruption within the hosting environment.

Who is most exposed

Education-sector deployments of the ProjectsAndPrograms School Management System, particularly web-facing instances on shared/LAMP stacks with rolling-release updates, are most at risk. Instances without strict upload validation or proper PHP execution controls are especially vulnerable.

Detection ideas

• Alerts for new or updated PHP files in the assets/upload area.
• POST attempts to /assets/createNotice.php with large or suspicious File payloads.
• Unusual or new webshell-like PHP code appearing in uploads.
• Web server logs showing successful uploads and subsequent requests to the uploaded file.
• File system monitoring for new writable files in webroot/assets.

Mitigation and prioritisation

• Patch or hotfix the upload handling to enforce strict file-type and content validation; remove or isolate upload-executable paths.
• Implement noexec, nosuid, and proper permissions on the uploads directory; disable PHP execution there if possible.
• Apply WAF rules to block arbitrary file uploads, or restrict to allowed extensions and MIME types; enforce authentication for uploads.
• Change-management: brief downtime window for patch, test in staging, verify logs post-deployment.
• If KEV true or EPSS ≥ 0.5 becomes known, treat as priority 1.