Read the docs
TI-2021-12933 Aliases CVE-2021-33538GHSA-37w8-w2xc-r5mg

WEIDMUELLER: WLAN devices affected by improper access control vulnerability

Priority MEDIUM 40CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

In Weidmueller Industrial WLAN devices in multiple versions an exploitable improper access control vulnerability exists in the iw_webs account settings functionality. A specially crafted user name entry can cause the overwrite of an existing user account password, resulting in remote shell access to the device as that user. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Why it matters now

EPSS 0.01048 64th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
WeidmuellerIE-WL(T)-BL-AP-CL-XXIE-WL-BL-AP-CL-EU (2536600000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-EU (2536650000) – V1.16.18 (Build 18081617); IE-WL-BL-AP-CL-US (2536660000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-US (2536670000) – V1.16.18 (Build 18081617)—No fix listedCNA
WeidmuellerIE-WL(T)-VL-AP-CL-XXIE-WL-VL-AP-BR-CL-EU (2536680000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-EU (2536690000) – V1.11.10 (Build 18122616); IE-WL-VL-AP-BR-CL-US (2536700000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-US (2536710000) – V1.11.10 (Build 18122616)—No fix listedCNA
  • IE-WL(T)-BL-AP-CL-XX VendorWeidmueller Affected IE-WL-BL-AP-CL-EU (2536600000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-EU (2536650000) – V1.16.18 (Build 18081617); IE-WL-BL-AP-CL-US (2536660000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-US (2536670000) – V1.16.18 (Build 18081617) Fixed in — No fix listed CNA
  • IE-WL(T)-VL-AP-CL-XX VendorWeidmueller Affected IE-WL-VL-AP-BR-CL-EU (2536680000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-EU (2536690000) – V1.11.10 (Build 18122616); IE-WL-VL-AP-BR-CL-US (2536700000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-US (2536710000) – V1.11.10 (Build 18122616) Fixed in — No fix listed CNA

CPE configurations NVD · 24

CPEVersionsRoleVendor
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
Show 14 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33538
  2. 2026-10-03 Alias added: GHSA-37w8-w2xc-r5mg

References

Advisory 1

  • TI-2021-12928 WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12927 WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12925 WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12932 WEIDMUELLER: WLAN devices affected by Remote Code Execution (RCE) vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12930 WEIDMUELLER: WLAN devices affected by exploitable format string vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12923 WEIDMUELLER: WLAN devices affected by privilege escalation vulnerability CVSS 3.1HIGH 8.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences