CVE-2014-5426: MatrikonOPC OPC Server for DNP3 1.2.3 and earlier allows remote attackers to cause a denial of service (unhand

Q: How do I fix CVE-2014-5426?

dnp3 opc server: upgrade to newer than 1.2.3. Exact commands for each OS are on this page.

Q: Is CVE-2014-5426 being exploited?

CVE-2014-5426 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-2014-5426 affect?

CVE-2014-5426 affects dnp3 opc server. Severity is medium (CVSS 5.0). MatrikonOPC OPC Server for DNP3 1.2.3 and earlier allows remote attackers to cause a denial of service (unhandled exception and DNP3 process crash) via a crafted message.

Q: How urgent is CVE-2014-5426?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2014-5426 is a medium-severity flaw (CVSS 5.0) affecting dnp3 opc server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MatrikonOPC OPC Server for DNP3 1.2.3 and earlier allows remote attackers to cause a denial of service (unhandled exception and DNP3 process crash) via a crafted message.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-17
Published	2014-11-27
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: matrikonopc

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-11-27 15:59 UTCPublished CVE record published
2026-06-17 00:11 UTCUpdated Record last modified

matrikonopc dnp3 opc server UPGRADE

Affected: <= 1.2.3

Fixed in: newer than 1.2.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dnp3-opc-server || rpm -q dnp3-opc-server || dnp3-opc-server --version

2. UPGRADE to newer than 1.2.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dnp3-opc-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dnp3-opc-server

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-2014-5426?

dnp3 opc server: upgrade to newer than 1.2.3. Exact commands for each OS are on this page.

Is CVE-2014-5426 being exploited?

CVE-2014-5426 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-2014-5426 affect?

CVE-2014-5426 affects dnp3 opc server. Severity is medium (CVSS 5.0). MatrikonOPC OPC Server for DNP3 1.2.3 and earlier allows remote attackers to cause a denial of service (unhandled exception and DNP3 process crash) via a crafted message.

How urgent is CVE-2014-5426?

Priority 35/100. No elevated risk signals yet.

References

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