CVE-2019-18249: Reliable Controls MACH-ProWebCom/Sys, all versions prior to 2.15 (Firmware versions prior to 8.26.4), may allo

Q: How do I fix CVE-2019-18249?

mach-prowebsys firmware: upgrade to 8.26.4; mach-prowebcom firmware: upgrade to 8.26.4. Exact commands for each OS are on this page.

Q: Is CVE-2019-18249 being exploited?

CVE-2019-18249 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-2019-18249 affect?

CVE-2019-18249 affects mach-prowebsys firmware, mach-prowebcom firmware. Severity is medium (CVSS 6.1). Reliable Controls MACH-ProWebCom/Sys, all versions prior to 2.15 (Firmware versions prior to 8.26.4), may allow attacker to execute commands on behalf of the user when an authenticated user clicks on a malicious link.

Q: How urgent is CVE-2019-18249?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADEUPGRADE

CVE-2019-18249 is a medium-severity flaw (CVSS 6.1) affecting mach-prowebsys firmware, mach-prowebcom firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reliable Controls MACH-ProWebCom/Sys, all versions prior to 2.15 (Firmware versions prior to 8.26.4), may allow attacker to execute commands on behalf of the user when an authenticated user clicks on a malicious link.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-12-24
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2019-12-24 15:15 UTCPublished CVE record published
2026-06-17 02:24 UTCUpdated Record last modified

reliablecontrols mach-prowebsys firmware UPGRADE

Affected: < 8.26.4

Fixed in: 8.26.4

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

reliablecontrols mach-prowebcom firmware UPGRADE

Affected: < 8.26.4

Fixed in: 8.26.4

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2019-18249?

mach-prowebsys firmware: upgrade to 8.26.4; mach-prowebcom firmware: upgrade to 8.26.4. Exact commands for each OS are on this page.

Is CVE-2019-18249 being exploited?

CVE-2019-18249 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-2019-18249 affect?

CVE-2019-18249 affects mach-prowebsys firmware, mach-prowebcom firmware. Severity is medium (CVSS 6.1). Reliable Controls MACH-ProWebCom/Sys, all versions prior to 2.15 (Firmware versions prior to 8.26.4), may allow attacker to execute commands on behalf of the user when an authenticated user clicks on a malicious link.

How urgent is CVE-2019-18249?

Priority 36/100. No elevated risk signals yet.

References

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