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CVE-2021-20999

WEIDMUELLER: Accidentally open network port in u-controls and IoT-Gateways

No known exploitation. EPSS puts it in the 61st percentile. Fixed in 1.9.1.

CVSS 3.19.4CriticalEPSS percentile61st0.9% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix1.9.1Upgrade to this build

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Weidmüller UC20-WL2000-ACAffected: ≥ 1.3.0, ≤ 1.9.0Upgrade to: after 1.9.0Affected: ≥ 1.10.0, ≤ 1.10.2Upgrade to: after 1.10.2Affected: ≥ 1.11.0, ≤ 1.12.1Upgrade to: after 1.12.1Stated by: CVE record
  • Weidmüller UC20-WL2000-IOTAffected: ≥ 1.3.0, ≤ 1.9.0Upgrade to: after 1.9.0Affected: ≥ 1.10.0, ≤ 1.10.2Upgrade to: after 1.10.2Affected: ≥ 1.11.0, ≤ 1.12.1Upgrade to: after 1.12.1Stated by: CVE record
  • Weidmüller IOT-GW30Affected: ≥ 1.3.0, ≤ 1.9.0Upgrade to: after 1.9.0Affected: ≥ 1.10.0, ≤ 1.10.2Upgrade to: after 1.10.2Affected: ≥ 1.11.0, ≤ 1.12.1Upgrade to: after 1.12.1Stated by: CVE record
  • Weidmüller IOT-GW30-4G-EUAffected: ≥ 1.3.0, ≤ 1.9.0Upgrade to: after 1.9.0Affected: ≥ 1.10.0, ≤ 1.10.2Upgrade to: after 1.10.2Affected: ≥ 1.11.0, ≤ 1.12.1Upgrade to: after 1.12.1Stated by: CVE record
  • Weidmueller Uc20-wl2000-ac FirmwareAffected: ≥ 1.3.0, < 1.9.1Upgrade to: 1.9.1Stated by: NVD

Versions as the sources state them. 3 more products have version data. Full version matrix after sign-in

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What it is

From the CVE record

In Weidmüller u-controls and IoT-Gateways in versions up to 1.12.1 a network port intended only for device-internal usage is accidentally accessible via external network interfaces. By exploiting this vulnerability the device may be manipulated or the operation may be stopped.

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.

EPSS61st
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

0.9% chance of exploitation activity in the next 30 days, which ranks it in the 61st percentile of scored CVEs.

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

Lifecycle

5 events over 1288 days, from the signal feeds we watch.

  1. Patch availableworkaround available, record updated
  2. Publishedweakness classified

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 9.4 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 NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality LowSome restricted information is disclosed, but limited in scope
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

Sources

References in the record

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