CVE-2021-33541
Last modified
CVE-2021-33541 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Phoenix Contact Classic Line Controllers ILC1x0 and ILC1x1 in all versions/variants are affected by a Denial-of-Service vulnerability. The communication protocols and device access do not feature authentication measures. EPSS estimates a 1.49% chance of exploitation in the next 30 days.
Description
Phoenix Contact Classic Line Controllers ILC1x0 and ILC1x1 in all versions/variants are affected by a Denial-of-Service vulnerability. The communication protocols and device access do not feature authentication measures. Remote attackers can use specially crafted IP packets to cause a denial of service on the PLC's network communication module. A successful attack stops all network communication. To restore the network connectivity the device needs to be restarted. The automation task is not affected.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Phoenixcontact | Ilc1x0 Firmware | All versions |
| Phoenixcontact | Ilc1x1 Firmware | All versions |
References
- https://cert.vde.com/en-us/advisories/vde-2021-019Third Party Advisory
- https://cert.vde.com/en-us/advisories/vde-2021-019Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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