Description
The web-based management interface uses a modified uhttpd server with CGI shell scripts. The HTTP Basic Authentication username, taken directly from the Authorization header without sanitization, is inserted into a shell command string executed via the system() function. By submitting a specially crafted username containing shell metacharacters, an unauthenticated attacker with network access to the device can escape the command context and execute arbitrary commands with root privileges.
Published: 2026-08-25
Score: 9.3 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Tue, 25 Aug 2026 09:15:00 +0000

Type Values Removed Values Added
Description The web-based management interface uses a modified uhttpd server with CGI shell scripts. The HTTP Basic Authentication username, taken directly from the Authorization header without sanitization, is inserted into a shell command string executed via the system() function. By submitting a specially crafted username containing shell metacharacters, an unauthenticated attacker with network access to the device can escape the command context and execute arbitrary commands with root privileges.
Title Unauthenticated Remote Code Execution via Shell Injection in Web Management Interface
First Time appeared Weidmueller
Weidmueller fwr Ie Sr 2tx Wl
Weidmueller fwr Ie Sr 2tx Wl 4g Eu Us
Weaknesses CWE-78
CPEs cpe:2.3:o:weidmueller:fwr_ie_sr_2tx_wl:*:*:*:*:*:*:*:*
cpe:2.3:o:weidmueller:fwr_ie_sr_2tx_wl_4g_eu_us:*:*:*:*:*:*:*:*
Vendors & Products Weidmueller
Weidmueller fwr Ie Sr 2tx Wl
Weidmueller fwr Ie Sr 2tx Wl 4g Eu Us
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Weidmueller Fwr Ie Sr 2tx Wl Fwr Ie Sr 2tx Wl 4g Eu Us
cve-icon MITRE

Status: PUBLISHED

Assigner: CERTVDE

Published:

Updated: 2026-08-25T08:54:55.934Z

Reserved: 2026-07-17T06:47:50.712Z

Link: CVE-2026-63586

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-25T09:17:31.823

Modified: 2026-08-25T09:17:31.823

Link: CVE-2026-63586

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')