PatchTheCVECVE-2024-3493: A specific malformed fragmented packet type (fragmented packets may be generated automatically by devices tha
CVE-2024-3493 is a high-severity flaw (CVSS 8.6) affecting controllogix 5580 firmware, guardlogix 5580 firmware, compactlogix 5380 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- High severity
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 8.6 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 50%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2024-04-15 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2024-3493?
controllogix 5580 firmware: mitigate or apply the listed mitigation; guardlogix 5580 firmware: mitigate or apply the listed mitigation; compactlogix 5380 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2024-3493 being exploited?
CVE-2024-3493 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-2024-3493 affect?
CVE-2024-3493 affects controllogix 5580 firmware, guardlogix 5580 firmware, compactlogix 5380 firmware. Severity is high (CVSS 8.6). 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 5
How urgent is CVE-2024-3493?
Priority 48/100. High severity; Remotely exploitable, no login, no user action
Software pages
Rockwell Automation vulnerabilities
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