Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-21005

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.

Published

2021-06-25T19:15:08.797

Last Modified

2024-11-21T05:47:23.300

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Primary
    CWE-362
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System phoenixcontact fl_switch_smcs_16tx_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_16tx - No
Operating System phoenixcontact fl_switch_smcs_14tx\/2fx_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_14tx\/2fx - No
Operating System phoenixcontact fl_switch_smcs_14tx\/2fx-sm_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_14tx\/2fx-sm - No
Operating System phoenixcontact fl_switch_smcs_8gt_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_8gt - No
Operating System phoenixcontact fl_switch_smcs_6gt\/2sfp_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_6gt\/2sfp - No
Operating System phoenixcontact fl_switch_smcs_8tx-pn_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_8tx-pn - No
Operating System phoenixcontact fl_switch_smcs_4tx-pn_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_4tx-pn - No
Operating System phoenixcontact fl_switch_smcs_8tx_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_8tx - No
Operating System phoenixcontact fl_switch_smcs_6tx\/2sfp_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smcs_6tx\/2sfp - No
Operating System phoenixcontact fl_switch_smn_6tx\/2pof-pn_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smn_6tx\/2pof-pn - No
Operating System phoenixcontact fl_switch_smn_8tx-pn_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smn_8tx-pn - No
Operating System phoenixcontact fl_switch_smn_6tx\/2fx_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smn_6tx\/2fx - No
Operating System phoenixcontact fl_switch_smn_6tx\/2fx_sm_firmware ≤ 4.70 Yes
Hardware phoenixcontact fl_switch_smn_6tx\/2fx_sm - No
Operating System phoenixcontact fl_nat_smn_8tx_firmware ≤ 4.63 Yes
Hardware phoenixcontact fl_nat_smn_8tx - No
Operating System phoenixcontact fl_nat_smn_8tx-m_firmware ≤ 4.63 Yes
Hardware phoenixcontact fl_nat_smn_8tx-m - No
References