KEV Intelligence

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2021-33544

E2 Series Command Injection

Geutebrück / E2 Series · EBC-21xx 1.12.13.2

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Severity
CVSS 7.2 · High
Confidence
High
Exploit status
Exploited in the wild
EPSS
95.3%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2021-33544 is a vulnerability affecting Geutebrück E2 Series, Encoder G-Code. Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to command injection, which may allow an...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

Geutebrück / E2 Series ebc-21xx 1.12.13.2.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

E2 Series Command Injection

Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to command injection, which may allow an attacker to remotely execute arbitrary code.

Vendor Product Affected Status
Geutebrück E2 Series EBC-21xx 1.12.13.2 Affected
Geutebrück E2 Series EBC-21xx 1.12.14.5 Affected
Geutebrück E2 Series EFD-22xx 1.12.13.2 Affected
Geutebrück E2 Series EFD-22xx 1.12.14.5 Affected
Geutebrück E2 Series ETHC-22xx 1.12.13.2 Affected
Geutebrück E2 Series ETHC-22xx 1.12.14.5 Affected
Geutebrück E2 Series EWPC-22xx 1.12.13.2 Affected
Geutebrück E2 Series EWPC-22xx 1.12.14.5 Affected
Geutebrück E2 Series Through 1.12.0.27 Affected
Geutebrück E2 Series Through 1.12.0.27 Affected
Geutebrück E2 Series Through 1.12.0.27 Affected
Geutebrück E2 Series Through 1.12.0.27 Affected
Geutebrück Encoder G-Code EEC-2xx 1.12.13.2 Affected
Geutebrück Encoder G-Code EEC-2xx 1.12.14.5 Affected
Geutebrück Encoder G-Code EEN-20xx 1.12.13.2 Affected
Geutebrück Encoder G-Code EEN-20xx 1.12.14.5 Affected
Geutebrück Encoder G-Code Through 1.12.0.27 Affected
Geutebrück Encoder G-Code Through 1.12.0.27 Affected
Published
13 Sep 2021
Exploitation Reported
08 Jun 2026
Attack vector
Remote
Complexity
Low
Privileges
High
User interaction
None

Tags

nuclei_scanner

CVE References

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 08 Jun 2026

Independent exploitation attestation added to the KEV Intelligence record.

Proof of concept available

Nuclei Templates

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
The Shadowserver First 2026-06-08 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/geutebruck_cmdinject_cve_2021_335xx.rb 28 Apr 2025
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-33544.yaml 25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

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

EPSS

95.3%

Weaknesses

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78

All CVSS Scores

CVSS v3.1 7.2 High

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

CVSS v2.0 6.5 Medium

AV:N/AC:L/Au:S/C:P/I:P/A:P

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Geutebruck - Remote Command Injection

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. Public PoC available

    Public proof-of-concept code published

  2. Added to KEV Intelligence KEV Feed

    High-confidence, third-party attested exploitation

  3. Metasploit module available

    Exploit module available

  4. Nuclei template available

    Scanner coverage available

  5. CVE published

    Vulnerability disclosed publicly

  6. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2021-33544

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2021-33544",
  "confidence": "High",
  "cvss_score": 7.2,
  "cvss_estimated": false,
  "epss_score": 0.953,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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