CVE-2021-33544Public exploitNetwork attack vector

Root command execution via unsanitized certificate fields

Published Sep 13, 2021 · Updated Sep 16, 2024

OS command injection in certmngr.cgi on Geutebrück G-Cam/E2 and Encoder G-Code firmware allows remote authenticated users to execute commands. The openssl_new path concatenates attacker-controlled certificate fields, including state, into a shell command and passes the result directly to system(). Administrator access is normally required, but a separate path-traversal authentication bypass can expose the CGI and yield root-level device control.

CVSS severity7.2
High
EPSS probability95.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in certmngr.cgi on Geutebrück G-Cam/E2 and Encoder G-Code firmware allows remote authenticated users to execute commands. The openssl_new path concatenates attacker-controlled certificate fields, including state, into a shell command and passes the result directly to system(). Administrator access is normally required, but a separate path-traversal authentication bypass can expose the CGI and yield root-level device control.

The record

CVE
CVE-2021-33544
Published
Sep 13, 2021
Updated
Sep 16, 2024
Vendor
Geutebrück
Product
G-Cam/E2 Series
Classifications
CWE-78, T1059.004, T1190
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

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

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 exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell
T1190Exploit Public-Facing Application

Public exploit references

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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