5.3

CVE-2018-7559: opcfoundation ua-.net-legacy Key Management Errors

CVSS: 5.3v3.0MediumModified
AliasesGHSA-gr4c-5rq6-cgh3
Published 13-06-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-7559 is a medium (CVSS 5.3) Key Management Errors vulnerability in opcfoundation ua-.net-legacy. EPSS estimates a 1.17% chance of exploitation in the next 30 days, higher than 66.8% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.0 (NVD)
EPSS score
1.17%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-06-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.17%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

0.00 pp

From 1.17% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Opcfoundation2 products
NuGet1 product
  • OPCFoundation.NetStandard.Opc.Ua< 1.3.352.12

2 vendors · 3 products

References

7 links