CVE-2021-41579: LCDS LAquis SCADA through 4.3.1.1085 is vulnerable to a control bypass and path traversal

Q: How do I fix CVE-2021-41579?

scada: upgrade to newer than 4.3.1.1085. Exact commands for each OS are on this page.

Q: Is CVE-2021-41579 being exploited?

CVE-2021-41579 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-2021-41579 affect?

CVE-2021-41579 affects scada. Severity is high (CVSS 7.8). LCDS LAquis SCADA through 4.3.1.1085 is vulnerable to a control bypass and path traversal. If an attacker can get a victim to load a malicious els project file and use the play feature, then the attacker can bypass a consent popup and write

This month

HIGH 7.8UPGRADE

CVE-2021-41579 is a high-severity flaw (CVSS 7.8) affecting scada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LCDS LAquis SCADA through 4.3.1.1085 is vulnerable to a control bypass and path traversal. If an attacker can get a victim to load a malicious els project file and use the play feature, then the attacker can bypass a consent popup and write arbitrary files to OS locations where the user has permission, leading to code execution.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-10-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: laquisscada

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

Am I affected?

Timeline

2021-10-04 18:15 UTCPublished CVE record published
2026-06-17 04:08 UTCUpdated Record last modified

laquisscada scada UPGRADE

Affected: <= 4.3.1.1085

Fixed in: newer than 4.3.1.1085

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 4.3.1.1085 (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-2021-41579?

scada: upgrade to newer than 4.3.1.1085. Exact commands for each OS are on this page.

Is CVE-2021-41579 being exploited?

CVE-2021-41579 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-2021-41579 affect?

CVE-2021-41579 affects scada. Severity is high (CVSS 7.8). LCDS LAquis SCADA through 4.3.1.1085 is vulnerable to a control bypass and path traversal. If an attacker can get a victim to load a malicious els project file and use the play feature, then the attacker can bypass a consent popup and write

How urgent is CVE-2021-41579?

Priority 45/100. High severity

Related CVEs

CVE-2020-25188 HIGH 7.8 UPGRADE An attacker who convinces a valid user to open a specially crafted project file to exploit could execute code

References

← Back to latest CVEs