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CVE-2024-42512

24
FAUCET Score

CVE-2024-42512 is a critical authentication bypass vulnerability affecting the OPC UA .NET Standard Stack prior to version 1.5.374.158, specifically when the deprecated Basic128Rsa15 security policy is enabled. With a CVSS score of 8.6 (High), this vulnerability allows an unauthenticated attacker to achieve high confidentiality impact and low integrity/availability impact with low attack complexity. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.374.158CPE matchmatch criteria
cpe:2.3:a:opcfoundation:ua_.net_standard_stack:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 21st percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

nugetpatch availablevia ghsa
Product: OPCFoundation.NetStandard.Opc.Ua.CoreFixed in: 1.5.374.158

Vendor Advisories (1)

nugetGHSA-h958-fxgg-g7w3medium

Security Update for the OPC UA .NET Standard Stack

Mar 3, 2025

References

files.opcfoundation.org / SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42512.pdf
Vendor Advisory