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CVE-2021-33531

WEIDMUELLER: WLAN devices affected by Hard-coded Credentials vulnerability

No known exploitation. EPSS puts it in the 53rd percentile. A vendor fix is available.

CVSS 3.18.8HighEPSS percentile53rd0.7% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFixVendor fixNo build named by the sources

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

  • Weidmüller IE-WL-BL-AP-CL-XXAffected: ≥ IE-WL-BL-AP-CL-EU (2536600000), ≤ V1.16.18 (Build 18081617)Upgrade to: after V1.16.18 (Build 18081617)Affected: ≥ IE-WLT-BL-AP-CL-EU (2536650000), ≤ V1.16.18 (Build 18081617)Upgrade to: after V1.16.18 (Build 18081617)Affected: ≥ IE-WL-BL-AP-CL-US (2536660000), ≤ V1.16.18 (Build 18081617)Upgrade to: after V1.16.18 (Build 18081617)Affected: ≥ IE-WLT-BL-AP-CL-US (2536670000), ≤ V1.16.18 (Build 18081617)Upgrade to: after V1.16.18 (Build 18081617)Stated by: CVE record
  • Weidmüller IE-WL-VL-AP-CL-XXAffected: ≥ IE-WL-VL-AP-BR-CL-EU (2536680000), ≤ V1.11.10 (Build 18122616)Upgrade to: after V1.11.10 (Build 18122616)Affected: ≥ IE-WLT-VL-AP-BR-CL-EU (2536690000), ≤ V1.11.10 (Build 18122616)Upgrade to: after V1.11.10 (Build 18122616)Affected: ≥ IE-WL-VL-AP-BR-CL-US (2536700000), ≤ V1.11.10 (Build 18122616)Upgrade to: after V1.11.10 (Build 18122616)Affected: ≥ IE-WLT-VL-AP-BR-CL-US (2536710000), ≤ V1.11.10 (Build 18122616)Upgrade to: after V1.11.10 (Build 18122616)Stated by: CVE record
  • Weidmueller Ie-wl-bl-ap-cl-eu FirmwareAffected: ≤ 1.16.18Upgrade to: after 1.16.18Stated by: NVD
  • Weidmueller Ie-wlt-bl-ap-cl-eu FirmwareAffected: ≤ 1.16.18Upgrade to: after 1.16.18Stated by: NVD
  • Weidmueller Ie-wl-bl-ap-cl-us FirmwareAffected: ≤ 1.16.18Upgrade to: after 1.16.18Stated by: NVD

Versions as the sources state them. 5 more products have version data. Full version matrix after sign-in

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What it is

From the CVE record

In Weidmueller Industrial WLAN devices in multiple versions an exploitable use of hard-coded credentials vulnerability exists in multiple iw_* utilities. The device operating system contains an undocumented encryption password, allowing for the creation of custom diagnostic scripts. An attacker can send diagnostic scripts while authenticated as a low privilege user to trigger this vulnerability.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS53rd
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.7% chance of exploitation activity in the next 30 days, which ranks it in the 53rd percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 1245 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Publishedweakness classified, att&ck mapped

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Scored 8.8 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

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