4.4

CVE-2020-29457: opcfoundation ua-.netstandard Improper Certificate Validation

CVSS: 4.4v3.1MediumModified
AliasesGHSA-mjww-934m-h4jw
Published 16-02-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-29457 is a medium (CVSS 4.4) Improper Certificate Validation vulnerability in opcfoundation ua-.netstandard. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.4% of scored vulnerabilities.

Overall risk
18/100
0100
Low · default modelHow is this calculated?
CVSS score
4.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.31%
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. 16-02-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A Privilege Elevation vulnerability in OPC UA .NET Standard Stack 1.4.363.107 could allow a rogue application to establish a secure connection.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

0.00 pp

From 0.31% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.31%

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

NuGet1 product
  • OPCFoundation.NetStandard.Opc.Ua.Core< 1.4.365.10
Opcfoundation1 product

2 vendors · 2 products

References

7 links