Vulnerability · CVE-2010-20112
Amlib’s NetOpacs webquery.dll contains a stack-based buffer overflow vulnerability triggered by improper handling of HTTP GET parameters.
Published Aug 21, 2025 · catalog updated Apr 7, 2026 · Amlib Amlibweb Library Management System
Last checked Oct 29, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2010-20112. EPSS is 1.67%. Act only if a listed version of Amlib Amlibweb Library Management System is installed.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Critical9.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 1.67%
- Remediation
- Vendor / distro source
- Affected products
- vendor Amlib Amlibweb Library Management System *
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
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Amlib Amlibweb Library Management System **
How to fix CVE-2010-20112
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
No version range is stored, so an installed version cannot be checked on this page.
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2010-20112. EPSS is 1.67%. Act only if a listed version of Amlib Amlibweb Library Management System is installed.
Which versions are affected?
Compare what you have installed with Amlib Amlibweb Library Management System * *. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 1.67%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Aug 21, 2025 · EUVD
Detected
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 s
Apr 7, 2026 · EUVD
Updated
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 s
Sources
- CVE.orgVulnerability recordCVE-2010-20112
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2010-20112
30-day exploitation probability 1.67%
first.org - EUVDVulnerability recordEUVD-2010-5308
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 stru
euvd.enisa.europa.eu - Metasploit ModulesPublic exploit moduleexploit_windows/http/amlibweb_webquerydll_app
Public module reference (normal). Module source is not copied into this catalog.
rapid7.com
References
Freshness
Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- Metasploit ModulesOct 29, 2026
- FIRST EPSSOct 23, 2026
- CVE.orgOct 22, 2026
- EUVDOct 21, 2026