CVE-2017-9661: An Uncontrolled Search Path Element issue was discovered in SIMPlight SCADA Software version 4.3.0.27 and prio

Q: How do I fix CVE-2017-9661?

scada: upgrade to newer than 4.3.0.27. Exact commands for each OS are on this page.

Q: Is CVE-2017-9661 being exploited?

CVE-2017-9661 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-2017-9661 affect?

CVE-2017-9661 affects scada. Severity is high (CVSS 7.0). An Uncontrolled Search Path Element issue was discovered in SIMPlight SCADA Software version 4.3.0.27 and prior. The uncontrolled search path element vulnerability has been identified, which may allow an attacker to place a malicious DLL fi

This month

HIGH 7.0UPGRADE

CVE-2017-9661 is a high-severity flaw (CVSS 7.0) affecting scada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An Uncontrolled Search Path Element issue was discovered in SIMPlight SCADA Software version 4.3.0.27 and prior. The uncontrolled search path element vulnerability has been identified, which may allow an attacker to place a malicious DLL file within the search path resulting in execution of arbitrary code.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.0 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-427
Published	2017-08-14
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2017-08-14 16:29 UTCPublished CVE record published
2026-06-17 01:28 UTCUpdated Record last modified

simplight scada UPGRADE

Affected: <= 4.3.0.27

Fixed in: newer than 4.3.0.27

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy scada || rpm -q scada || scada --version

2. UPGRADE to newer than 4.3.0.27 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade scada

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade scada

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-2017-9661?

scada: upgrade to newer than 4.3.0.27. Exact commands for each OS are on this page.

Is CVE-2017-9661 being exploited?

CVE-2017-9661 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-2017-9661 affect?

CVE-2017-9661 affects scada. Severity is high (CVSS 7.0). An Uncontrolled Search Path Element issue was discovered in SIMPlight SCADA Software version 4.3.0.27 and prior. The uncontrolled search path element vulnerability has been identified, which may allow an attacker to place a malicious DLL fi

How urgent is CVE-2017-9661?

Priority 42/100. High severity

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References

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