CVE-2024-7591: Improper Input Validation vulnerability in Progress LoadMaster allows OS Command Injection.This issue affects:

Q: How do I fix CVE-2024-7591?

loadmaster: upgrade to newer than 7.2.60.0; multi-tenant hypervisor firmware: upgrade to 7.1.35.11. Exact commands for each OS are on this page.

Q: Is CVE-2024-7591 being exploited?

CVE-2024-7591 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-2024-7591 affect?

CVE-2024-7591 affects loadmaster, multi-tenant hypervisor firmware. Severity is critical (CVSS 10.0). Improper Input Validation vulnerability in Progress LoadMaster allows OS Command Injection.This issue affects: * LoadMaster: 7.2.40.0 and above * ECS: All versions * Multi-Tenancy: 7.1.35.4 and above

Q: How urgent is CVE-2024-7591?

Priority 68/100. Critical severity; EPSS top 1%: very likely to be exploited; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 10.0REMOTEUPGRADEUPGRADE

CVE-2024-7591 is a critical-severity flaw (CVSS 10.0) affecting loadmaster, multi-tenant hypervisor firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Input Validation vulnerability in Progress LoadMaster allows OS Command Injection.This issue affects: * LoadMaster: 7.2.40.0 and above * ECS: All versions * Multi-Tenancy: 7.1.35.4 and above

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	39.2% (top 1%)
CISA exploited list	No
Weakness	CWE-78
Published	2024-09-05
Last modified	2026-06-17

Publisher (CNA): Progress Software Corporation · Vendor: kemptechnologies

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

Am I affected?

Timeline

2024-09-05 18:15 UTCPublished CVE record published
2026-06-17 08:20 UTCUpdated Record last modified

kemptechnologies loadmaster UPGRADE

Affected: >= 7.2.40.0 and <= 7.2.60.0

Fixed in: newer than 7.2.60.0

Safe to downgrade to: a release before 7.2.40.0

1. Check installed version

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

2. UPGRADE to newer than 7.2.60.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade loadmaster

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 7.2.40.0 (Debian / Ubuntu)

apt-cache madison loadmaster sudo apt install loadmaster=<VERSION_BEFORE_7.2.40.0> sudo apt-mark hold loadmaster

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

dnf --showduplicates list loadmaster sudo dnf downgrade loadmaster-<VERSION_BEFORE_7.2.40.0> sudo dnf versionlock add loadmaster

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.

kemptechnologies multi-tenant hypervisor firmware UPGRADE

Affected: >= 7.1.35.4 and < 7.1.35.11

Fixed in: 7.1.35.11

Safe to downgrade to: a release before 7.1.35.4

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.

Exact fixes by distribution

Fedora 46 · noctalia · FIXED · 5.4.1-1.fc46 · FEDORA-2026-a4755e8ef7 · source

sudo dnf upgrade --advisory=FEDORA-2026-a4755e8ef7

Fedora ELN · efifs · FIXED · 1.13-1.eln159 · FEDORA-2026-3fd0bb7307 · source

sudo dnf upgrade --advisory=FEDORA-2026-3fd0bb7307

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: butyraldehyde/CVE-2024-7591-PoC (0 stars)
Nuclei scan template: Kemp LoadMaster Load Balancer - Unauthenticated Command Injection

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-2024-7591?

loadmaster: upgrade to newer than 7.2.60.0; multi-tenant hypervisor firmware: upgrade to 7.1.35.11. Exact commands for each OS are on this page.

Is CVE-2024-7591 being exploited?

CVE-2024-7591 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-2024-7591 affect?

CVE-2024-7591 affects loadmaster, multi-tenant hypervisor firmware. Severity is critical (CVSS 10.0). Improper Input Validation vulnerability in Progress LoadMaster allows OS Command Injection.This issue affects: * LoadMaster: 7.2.40.0 and above * ECS: All versions * Multi-Tenancy: 7.1.35.4 and above

How urgent is CVE-2024-7591?

Priority 68/100. Critical severity; EPSS top 1%: very likely to be exploited; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

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References

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