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CRITICAL severity

CVE-2016-1524 — Prosafe Network Management Software 300

CRITICAL

CVE-2016-1524 is a critical-severity (CVSS 9.6) vulnerability in netgear prosafe network management software 300. 2 public exploit references exist, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.

Multiple unrestricted file upload vulnerabilities in NETGEAR Management System NMS300 1.5.0.11 and earlier allow remote attackers to execute arbitrary Java code by using (1) fileUpload.do…

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
2 known
Exploitation data as of Oct 28, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
94.1%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
57.2%71.5%85.7%100.0%67.6%94.1%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2016-1524 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 397,508 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Multiple unrestricted file upload vulnerabilities in NETGEAR Management System NMS300 1.5.0.11 and earlier allow remote attackers to execute arbitrary Java code by using (1) fileUpload.do or (2) lib-1.0/external/flash/fileUpload.do to upload a JSP file, and then accessing it via a direct request for a /null URI.

Affected Products

1 product · 1 configurations
Application
prosafe network management software 300netgear
≤ 1.5.0.11
range
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-39412webappshardware

Netgear NMS300 ProSafe Network Management System - Multiple Vulnerabilities

by Pedro Ribeiro · Feb 4, 2016

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every netgear prosafe network management software 300 deployment and check each version against the affected-products list above.

  2. Remediation status

    No patch has shipped for CVE-2016-1524 yet — track the netgear prosafe network management software 300 advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

Multiple unrestricted file upload vulnerabilities in NETGEAR Management System NMS300 1.5.0.11 and earlier allow remote attackers to execute arbitrary Java code by using (1) fileUpload.do or (2) lib-1.0/external/flash/fileUpload.do to upload a JSP file, and then accessing it via a direct request for a /null URI.
O3 Security · Runtime Protection

Is CVE-2016-1524 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

CVE-2016-1524: Critical 9.6 severity