CVE-2010-20112

CRITICAL EPSS 59.9%
Published Aug 21, 202510mo ago · Modified Jun 16, 20261w ago
9.3 CVSS 4.0
Critical
Find Similar
Published Aug 21, 2025 10mo ago
Last Modified Jun 16, 2026 1w ago

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

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
59.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-121

References 6

  • advisories.checkpoint.com https://advisories.checkpoint.com/defense/advisories/public/2013/cpai-2013-1344.html
  • raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/amlibweb_webquerydll_app.rb
  • amlib.co.uk https://www.amlib.co.uk/product/product.aspx?menuId=top_products
  • exploit-db.com https://www.exploit-db.com/exploits/16793
  • fortiguard.com https://www.fortiguard.com/encyclopedia/ips/24002
  • vulncheck.com https://www.vulncheck.com/advisories/amlibweb-netopacs-stack-buffer-overflow

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.