GHSA-782p-53wq-cxmj
HIGHGHSA-782p-53wq-cxmj is a high-severity (CVSS 7.5) Out-of-bounds Write vulnerability in OPCFoundation.NetStandard.Opc.Ua. O3 Security confirms whether GHSA-782p-53wq-cxmj is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
High severity vulnerability that affects OPCFoundation.NetStandard.Opc.Ua
Real-World Exposure
OPCFoundation.NetStandard.Opc.UaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.
Description
Buffer overflow in OPC UA applications allows remote attackers to trigger a stack overflow with carefully structured requests.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | OPCFoundation.NetStandard.Opc.Ua | all versions | 1.4.353.15 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for OPCFoundation.NetStandard.Opc.Ua. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update OPCFoundation.NetStandard.Opc.Ua to 1.4.353.15 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-782p-53wq-cxmj is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-782p-53wq-cxmj is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-782p-53wq-cxmj. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-782p-53wq-cxmj in your dependencies?
O3 detects GHSA-782p-53wq-cxmj across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.