Security readout for executives and security teams
Plain-English summary
This vulnerability affects DCN S4600-10P-SI switches before R0241.0470. A person with valid low-level credentials and physical console access could break out of a restricted console area and run commands as root. Business urgency is limited by the physical-access requirement, but exposed network infrastructure should still be checked.
Executive priority
Treat this as a targeted infrastructure hardening item, not an internet-scale emergency. Prioritize affected switches in shared facilities, remote sites, labs, or environments with broad physical access.
Technical view
Improper parameter validation in the console interface allows shell metacharacter injection in capture command parameters. The reported impact is sandbox escape and root-level system command execution, with output displayed on the serial interface. The CVE metadata lists no CVSS, CWE, or CPE details.
Likely exposure
Exposure is likely limited to organizations operating DCN S4600-10P-SI devices on firmware before R0241.0470, especially where serial console access is weakly controlled or low-privileged console credentials are broadly available.
Exploitation context
The source bundle does not report active exploitation, and CISA KEV status is false. Exploitation requires both credentials and physical access, reducing remote attack likelihood but increasing concern for insider, contractor, or equipment-room compromise scenarios.
Researcher notes
Evidence is specific but incomplete: no CVSS score, CWE, CPE, or detailed vendor remediation text is provided in the bundle. The key constraints are authenticated low privilege plus physical serial access, with root command execution as the reported impact.
Mitigation direction
- Identify any DCN S4600-10P-SI switches in the environment.
- Upgrade affected devices to R0241.0470 or vendor-recommended newer firmware.
- Restrict physical access to serial and console interfaces.
- Limit and review low-privileged accounts with console access.
- Check vendor guidance for any additional hardening instructions.
Validation and detection
- Inventory switch models and record installed firmware versions.
- Flag S4600-10P-SI devices running versions before R0241.0470.
- Review who can physically access console or serial ports.
- Review console account assignments and remove unnecessary access.
- Check available logs or change records for unusual console activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-42324 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dcneurope.eu/products/switches/s4600-10p-siCVE reference · x_refsource_MISC
- https://exatel.pl/cve-2021-42324-metacharacter-injection-w-przelacznikach-dcn-s4600-10p-si/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.