CVE-2010-20112 Details
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
A stack-based buffer overflow vulnerability has been identified in Amlib's NetOpacs webquery.dll. This issue arises from inadequate input validation of HTTP GET parameters, particularly the 'app' parameter. The vulnerability allows attackers to send overly long strings that overwrite memory structures, including the Structured Exception Handler (SEH), potentially leading to arbitrary code execution. Additionally, malformed parameter names followed by an equals sign can disrupt normal control flow. This vulnerability is accessible through Internet Information Services (IIS) and impacts older Windows versions.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 21, 2025CISA-ADP
Assessed Aug 22, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Amlib NetOpacs | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 16, 2026 | CVE Modified | [email protected] |
| Jun 16, 2026 | CVE Modified | CISA-ADP |
| Aug 22, 2025 | CVE Modified | CISA-ADP |
| Aug 21, 2025 | New CVE Received | [email protected] |
Volerion