How severe is CVE-2024-3493?

CVE-2024-3493 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-3493 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-3493?

CVE-2024-3493 primarily affects Rockwellautomation Controllogix 5580 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-3493?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-3493 have an EU (EUVD) identifier?

Yes. CVE-2024-3493 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32079.

When was CVE-2024-3493 published?

CVE-2024-3493 was published on 2024-04-15 and last updated on 2026-06-17.

CVE-2024-3493

CVE-2024-3493 is a high-severity vulnerability in Rockwellautomation Controllogix 5580 Firmware with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-32079
Weakness: CWE-20
Affected product: Rockwellautomation Controllogix 5580 Firmware
Published: 2024-04-15
Last modified: 2026-06-17

Description

A specific malformed fragmented packet type (fragmented packets may be generated automatically by devices that send large amounts of data) can cause a major nonrecoverable fault (MNRF) Rockwell Automation's ControlLogix 5580, Guard Logix 5580, CompactLogix 5380, and 1756-EN4TR. If exploited, the affected product will become unavailable and require a manual restart to recover it. Additionally, an MNRF could result in a loss of view and/or control of connected devices.

Frequently asked questions

What is CVE-2024-3493?: A specific malformed fragmented packet type (fragmented packets may be generated automatically by devices that send large amounts of data) can cause a major nonrecoverable fault (MNRF) Rockwell Automation's ControlLogix 5580, Guard Logix 5580, CompactLogix 5380, and 1756-EN4TR. If exploited, the affected product will become unavailable and require a manual restart to recover it. Additionally, an MNRF could result in a loss of view and/or control of connected devices.
How severe is CVE-2024-3493?: CVE-2024-3493 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-3493 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-3493?: CVE-2024-3493 primarily affects Rockwellautomation Controllogix 5580 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-3493?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-3493 have an EU (EUVD) identifier?: Yes. CVE-2024-3493 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32079.
When was CVE-2024-3493 published?: CVE-2024-3493 was published on 2024-04-15 and last updated on 2026-06-17.

References

https://www.rockwellautomation.com/en-us/support/advisory.SD1666.html

Affected products (8)

cpe:2.3:o:rockwellautomation:controllogix_5580_firmware:35.011:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:guardlogix_5580_firmware:35.011:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compactlogix_5380_firmware:35.011:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compact_guardlogix_5380_firmware:35.011:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:1756-en4tr_firmware:5.001:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:controllogix_5580_process_firmware:35.011:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compactlogix_5380_process_firmware:35.011:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:compactlogix_5480_firmware:35.011:*:*:*:*:*:*:*

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