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

Q: How do I fix CVE-2024-42513?

ua .net standard stack: upgrade to 1.5.374.158. Exact commands for each OS are on this page.

Q: Is CVE-2024-42513 being exploited?

CVE-2024-42513 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-42513 affect?

CVE-2024-42513 affects ua .net standard stack. Severity is medium (CVSS 5.3). 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.

Q: How urgent is CVE-2024-42513?

Priority 35/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2024-42513 is a medium-severity flaw (CVSS 5.3) affecting ua .net standard stack. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-305
Published	2025-02-10
Last modified	2026-10-15

Publisher (CNA): MITRE · Vendor: opcfoundation

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-10 19:15 UTCPublished CVE record published
2026-10-15 01:18 UTCUpdated Record last modified

opcfoundation ua .net standard stack UPGRADE

Affected: < 1.5.374.158

Fixed in: 1.5.374.158

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ua-.net-standard-stack || rpm -q ua-.net-standard-stack || ua-.net-standard-stack --version

2. UPGRADE to 1.5.374.158 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ua-.net-standard-stack

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ua-.net-standard-stack

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-42513?

ua .net standard stack: upgrade to 1.5.374.158. Exact commands for each OS are on this page.

Is CVE-2024-42513 being exploited?

CVE-2024-42513 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-42513 affect?

CVE-2024-42513 affects ua .net standard stack. Severity is medium (CVSS 5.3). 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.

How urgent is CVE-2024-42513?

Priority 35/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-42512 HIGH 8.6 UPGRADE Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass a

References

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