7.8
CVE-2021-21005
- EPSS 0.04%
- Published 25.06.2021 19:15:08
- Last modified 21.11.2024 05:47:23
- Source info@cert.vde.com
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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.
Data is provided by the National Vulnerability Database (NVD)
Phoenixcontact ≫ Fl Switch Smcs 16tx Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 14tx/2fx Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 14tx/2fx-sm Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 8gt Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 6gt/2sfp Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 8tx-pn Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 4tx-pn Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 8tx Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smcs 6tx/2sfp Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smn 6tx/2pof-pn Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smn 8tx-pn Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smn 6tx/2fx Firmware Version <= 4.70
Phoenixcontact ≫ Fl Switch Smn 6tx/2fx Sm Firmware Version <= 4.70
Phoenixcontact ≫ Fl Nat Smn 8tx Firmware Version <= 4.63
Phoenixcontact ≫ Fl Nat Smn 8tx-m Firmware Version <= 4.63
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.04% | 0.098 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 7.5 | 3.9 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
|
| nvd@nist.gov | 7.8 | 10 | 6.9 |
AV:N/AC:L/Au:N/C:N/I:N/A:C
|
| info@cert.vde.com | 7.5 | 3.9 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
|
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.