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CVE-2021-21005

—
CVSS 3.1
7.5 high
EPSS
<1%p50
Published
()
Modified
Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions if an attacker sends a hand-crafted TCP-Packet with the Urgent-Flag set and the Urgent-Pointer set to 0, the network stack will crash. The device needs to be rebooted afterwards.

Vendors
phoenixcontact
Products
fl switch smcs 16tx firmware, fl switch smcs 14tx\/2fx firmware, fl switch smcs 14tx\/2fx-sm firmware, fl switch smcs 8gt firmware, fl switch smcs 6gt\/2sfp firmware, fl switch smcs 8tx-pn firmware, fl switch smcs 4tx-pn firmware, fl switch smcs 8tx firmware, fl switch smcs 6tx\/2sfp firmware, fl switch smn 6tx\/2pof-pn firmware, fl switch smn 8tx-pn firmware, fl switch smn 6tx\/2fx firmware
Weakness
CWE-362
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD CVE.org GitHub PoCs EPSS (0.7%)

In the news

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