Security Update for the OPC UA .NET Standard Stack

published 2024-10-18 2 y ago modified 2026-06-17 4 mo ago also GHSA-7vfh-cqpc-4267 , EUVD-2024-2986

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits: 0; none known

An issue was discovered in OPC Foundation OPCFoundation/UA-.NETStandard through 1.5.374.78. A remote attacker can send requests with invalid credentials and cause the server performance to degrade gradually.

Patch / fix

fixed in 2

nuget OPCFoundation.NetStandard.Opc.Ua 1.5.374.118
nuget OPCFoundation.NetStandard.Opc.Ua.Core 1.5.374.118

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-10-23)

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
GitHub	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem	package	affected	fixed in
nuget	OPCFoundation.NetStandard.Opc.Ua	<1.5.374.118	1.5.374.118
nuget	OPCFoundation.NetStandard.Opc.Ua.Core	<1.5.374.118	1.5.374.118

Affected products

opcfoundation ua-.netstandard

Classification

Weakness

CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary