CVE-2024-5990: Due to an improper input validation, an unauthenticated threat actor can send a malicious message to a monitor

This month

HIGH 7.5REMOTEUPGRADEUPGRADE

CVE-2024-5990 is a high-severity flaw (CVSS 7.5) affecting thinmanager, thinserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Due to an improper input validation, an unauthenticated threat actor can send a malicious message to a monitor thread within Rockwell Automation ThinServer™ and cause a denial-of-service condition on the affected device.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-20
Published	2024-06-25
Last modified	2026-06-17

Publisher (CNA): Rockwell Automation · Vendor: rockwellautomation

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

Am I affected?

Timeline

2024-06-25 16:15 UTCPublished CVE record published
2026-06-17 08:17 UTCUpdated Record last modified

rockwellautomation thinmanager UPGRADE

Affected: >= 11.1.0 and < 11.1.8 · >= 11.2.0 and < 11.2.9 · >= 12.0.0 and < 12.0.7 · >= 12.1.0 and < 12.1.8 · >= 13.0.0 and < 13.0.4 · >= 13.1.0 and < 13.1.2

Fixed in: 11.1.8, 11.2.9, 12.0.7, 12.1.8, 13.0.4, 13.1.2

Safe to downgrade to: a release before 11.1.0

1. Check installed version

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

2. UPGRADE to 11.1.8 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thinmanager

Note

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

3. If no update is available yet, DOWNGRADE to a release before 11.1.0 (Debian / Ubuntu)

apt-cache madison thinmanager sudo apt install thinmanager=<VERSION_BEFORE_11.1.0> sudo apt-mark hold thinmanager

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list thinmanager sudo dnf downgrade thinmanager-<VERSION_BEFORE_11.1.0> sudo dnf versionlock add thinmanager

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

rockwellautomation thinserver UPGRADE

Affected: >= 11.1.0 and < 11.1.8 · >= 11.2.0 and < 11.2.9 · >= 12.0.0 and < 12.0.7 · >= 12.1.0 and < 12.1.8 · >= 13.0.0 and < 13.0.4 · >= 13.1.0 and < 13.1.2

Fixed in: 11.1.8, 11.2.9, 12.0.7, 12.1.8, 13.0.4, 13.1.2

Safe to downgrade to: a release before 11.1.0

1. Check installed version

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

2. UPGRADE to 11.1.8 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thinserver

Note

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

3. If no update is available yet, DOWNGRADE to a release before 11.1.0 (Debian / Ubuntu)

apt-cache madison thinserver sudo apt install thinserver=<VERSION_BEFORE_11.1.0> sudo apt-mark hold thinserver

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list thinserver sudo dnf downgrade thinserver-<VERSION_BEFORE_11.1.0> sudo dnf versionlock add thinserver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2024-5990?

thinmanager: upgrade to 11.1.8, 11.2.9, 12.0.7, 12.1.8, 13.0.4, 13.1.2; thinserver: upgrade to 11.1.8, 11.2.9, 12.0.7, 12.1.8, 13.0.4, 13.1.2. Exact commands for each OS are on this page.

Is CVE-2024-5990 being exploited?

CVE-2024-5990 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-2024-5990 affect?

CVE-2024-5990 affects thinmanager, thinserver. Severity is high (CVSS 7.5). Due to an improper input validation, an unauthenticated threat actor can send a malicious message to a monitor thread within Rockwell Automation ThinServer™ and cause a denial-of-service condition on the affected device.

How urgent is CVE-2024-5990?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

Software pages

Rockwell Automation vulnerabilities

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References

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