CVE-2021-33533
WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability
In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in the iw_webs functionality. A specially crafted iw_serverip parameter can cause user input to be reflected in a subsequent iw_system call, resulting in remote control over the device. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability
In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in the iw_webs functionality. A specially crafted iw_serverip parameter can cause user input to be reflected in a subsequent iw_system call, resulting in remote control over the device. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
- Record
CVE-2021-33533- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2021-20225
In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in the iw_webs functionality. A specially crafted iw_serverip parameter can cause user input to be reflected in a subsequent iw_system call, resulting in remote control over the device. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
- Record
EUVD-2021-20225- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6g5w-7qx6-q4pr No score
In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection...
In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in the iw_webs functionality. A specially crafted iw_serverip parameter can cause user input to be reflected in a subsequent iw_system call, resulting in remote control over the device. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
- Record
GHSA-6g5w-7qx6-q4pr- Weakness
- CWE-78
- Updated
- 2026-11-02
NVD
In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in the iw_webs functionality. A specially crafted iw_serverip parameter can cause user input to be reflected in a subsequent iw_system call, resulting in remote control over the device. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
- Record
CVE-2021-33533- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
- weidmueller ie-wl-bl-ap-cl-eu firmware
- weidmueller ie-wl-bl-ap-cl-us firmware
- weidmueller ie-wl-vl-ap-br-cl-eu firmware
- weidmueller ie-wl-vl-ap-br-cl-us firmware
- weidmueller ie-wlt-bl-ap-cl-eu firmware
- weidmueller ie-wlt-bl-ap-cl-us firmware
- weidmueller ie-wlt-vl-ap-br-cl-eu firmware
- weidmueller ie-wlt-vl-ap-br-cl-us firmware
- weidmüller ie-wl(t)-bl-ap-cl-xx
- weidmüller ie-wl(t)-vl-ap-cl-xx
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-33533 is a high vulnerability (CVSS 8.8) in Weidmueller Ie-wl-bl-ap-cl-eu Firmware, published June 25, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.73%, the 77th percentile. No source names a fixed version.