CVE-2024-45273: An unauthenticated local attacker can decrypt the devices config file and therefore compromise the device due
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Routine
HIGH 8.4UPGRADEUPGRADEUPGRADE
CVE-2024-45273 is a high-severity flaw (CVSS 8.4) affecting mbnet.mini firmware, myrex24 v2 virtual server, rex 300 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An unauthenticated local attacker can decrypt the devices config file and therefore compromise the device due to a weak implementation of the encryption used.
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
helmholz rex 300 firmware UPGRADE
Affected: <= 5.1.11
Fixed in: newer than 5.1.11
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.
helmholz rex 200 firmware UPGRADE
Affected: < 8.2.1
Fixed in: 8.2.1
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.
helmholz rex 250 firmware UPGRADE
Affected: < 8.2.1
Fixed in: 8.2.1
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.
helmholz rex 100 firmware UPGRADE
Affected: < 2.3.1
Fixed in: 2.3.1
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 sourceNVD · 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-2024-45273?
mbnet.mini firmware: upgrade to 2.3.1; myrex24 v2 virtual server: upgrade to 2.16.3; rex 300 firmware: upgrade to newer than 5.1.11. Exact commands for each OS are on this page.
Is CVE-2024-45273 being exploited?
CVE-2024-45273 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-2024-45273 affect?
CVE-2024-45273 affects mbnet.mini firmware, myrex24 v2 virtual server, rex 300 firmware. Severity is high (CVSS 8.4). An unauthenticated local attacker can decrypt the devices config file and therefore compromise the device due to a weak implementation of the encryption used.
How urgent is CVE-2024-45273?
Priority 30/100. High severity
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