Amlibweb NetOpacs webquery.dll Stack Buffer Overflow
Published Aug 21, 2025
9.3
CRITICALCVSS 4.0
EPSS 1.12%
Description
Amlib’s NetOpacs webquery.dll contains a stack-based buffer overflow vulnerability triggered by improper handling of HTTP GET parameters. Specifically, the application fails to enforce bounds on input supplied to the app parameter, allowing excessive data to overwrite memory structures including the Structured Exception Handler (SEH). Additionally, malformed parameter names followed by an equals sign may result in unintended control flow behavior. This vulnerability is exposed through IIS and affects legacy Windows deployments
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Amlib | Amlibweb Library Management System | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (6)
- https://advisories.checkpoint.com/defense/advisories/public/2013/cpai-2013-1344.html third-party-advisory
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/amlibweb_webquerydll_app.rb exploit
- https://www.amlib.co.uk/product/product.aspx?menuId=top_products product
- https://www.exploit-db.com/exploits/16793 exploit
- https://www.fortiguard.com/encyclopedia/ips/24002 third-party-advisory
- https://www.vulncheck.com/advisories/amlibweb-netopacs-stack-buffer-overflow third-party-advisory
Change history (0)
No recorded changes yet.