CVE-2021-21005CWE-362

Race Condition Vulnerability in Phoenix Contact FL SWITCH SMCS series products

High · published June 25, 2021

CVSS v3.1
7.5
EPSS
1%
Percentile
51.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00678 · 51.8th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2021-06-25T18:25Z
EPSS history
Timeline
  • 25 JUN 18:25Z
    Race Condition Vulnerability in Phoenix Contact FL SWITCH SMCS series products
    cvelistv5