CVE-2021-42324
Due to improper parameter validation in the console interface, it is possible for a low-privileged authenticated attacker to escape the sandbox environment and execute system commands as root via shell metacharacters in the capture command parameters.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered on DCN (Digital China Networks) S4600-10P-SI devices before R0241.0470. Due to improper parameter validation in the console interface, it is possible for a low-privileged authenticated attacker to escape the sandbox environment and execute system commands as root via shell metacharacters in the capture command parameters. Command output will be shown on the Serial interface of the device. Exploitation requires both credentials and physical access.
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.62% probability · 50th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- dcnglobal/s4600-10p-si firmware
- Source
- cve@mitre.org
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://exatel.pl/cve-2021-42324-metacharacter-injection-w-przelacznikach-dcn-s4600-10p-si/Exploit, Third Party Advisory
- https://www.dcneurope.eu/products/switches/s4600-10p-siBroken Link
- https://exatel.pl/cve-2021-42324-metacharacter-injection-w-przelacznikach-dcn-s4600-10p-si/Exploit, Third Party Advisory
- https://www.dcneurope.eu/products/switches/s4600-10p-siBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.