CVE-2021-33551Network attack vector

Authenticated command injection via environment.lang

Published Sep 13, 2021 · Updated Sep 16, 2024

Command injection in Geutebrück G-Cam/E2 Series and Encoder G-Code firmware allows remote authenticated users to execute arbitrary code. The oem.cgi endpoint passes the environment.lang parameter into an operating-system command without neutralizing shell metacharacters, enabling command injection. Administrator-level web access is required, and successful exploitation runs commands with root privileges on the camera or encoder.

CVSS severity7.2
High
EPSS probability48.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Geutebrück G-Cam/E2 Series and Encoder G-Code firmware allows remote authenticated users to execute arbitrary code. The oem.cgi endpoint passes the environment.lang parameter into an operating-system command without neutralizing shell metacharacters, enabling command injection. Administrator-level web access is required, and successful exploitation runs commands with root privileges on the camera or encoder.

The record

CVE
CVE-2021-33551
Published
Sep 13, 2021
Updated
Sep 16, 2024
Vendor
Geutebrück
Product
G-Cam/E2 Series
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=EBC-21xx <=1.12.0.27
  2. Affected versionversion=EBC-21xx 1.12.13.2
  3. Affected versionversion=EBC-21xx 1.12.14.5
  4. Affected versionversion=EFD-22xx <=1.12.0.27
  5. Affected versionversion=EFD-22xx 1.12.13.2
  6. Affected versionversion=EFD-22xx 1.12.14.5
  7. Affected versionversion=ETHC-22xx <=1.12.0.27
  8. Affected versionversion=ETHC-22xx 1.12.13.2
  9. Affected versionversion=ETHC-22xx 1.12.14.5
  10. Affected versionversion=EWPC-22xx <=1.12.0.27
  11. Affected versionversion=EWPC-22xx 1.12.13.2
  12. Affected versionversion=EWPC-22xx 1.12.14.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Geutebrück · G-Cam/E2 Seriesversion=EBC-21xx <=1.12.0.27; version=EBC-21xx 1.12.13.2; version=EBC-21xx 1.12.14.5; version=EFD-22xx <=1.12.0.27; version=EFD-22xx 1.12.13.2; version=EFD-22xx 1.12.14.5; version=ETHC-22xx <=1.12.0.27; version=ETHC-22xx 1.12.13.2; version=ETHC-22xx 1.12.14.5; version=EWPC-22xx <=1.12.0.27; version=EWPC-22xx 1.12.13.2; version=EWPC-22xx 1.12.14.5
Geutebrück · Encoder G-Codeversion=EEC-2xx <=1.12.0.27; version=EEC-2xx 1.12.13.2; version=EEC-2xx 1.12.14.5; version=EEN-20xx <=1.12.0.27; version=EEN-20xx 1.12.13.2; version=EEN-20xx 1.12.14.5

Published CVSS scores

7.2CERT VDECVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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