PatchTheCVECVE-2021-33543: Multiple camera devices by UDP Technology, Geutebrück and other vendors allow unauthenticated remote access to
CVE-2021-33543 is a critical-severity flaw (CVSS 9.8) affecting g-cam ebc-2110 firmware, g-cam ebc-2111 firmware, g-cam efd-2241 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Multiple camera devices by UDP Technology, Geutebrück and other vendors allow unauthenticated remote access to sensitive files due to default user authentication settings. This can lead to manipulation of the device and denial of service.
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 81.3% (top 1%) |
| CISA exploited list | No |
| Weakness | CWE-306 |
| Published | 2021-09-13 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Metasploit: Geutebruck Multiple Remote Command Execution
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-33543?
g-cam ebc-2110 firmware: upgrade to newer than 1.12.0.27; g-cam ebc-2111 firmware: upgrade to newer than 1.12.0.27; g-cam efd-2241 firmware: upgrade to newer than 1.12.0.27. Exact commands for each OS are on this page.
Is CVE-2021-33543 being exploited?
CVE-2021-33543 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-33543 affect?
CVE-2021-33543 affects g-cam ebc-2110 firmware, g-cam ebc-2111 firmware, g-cam efd-2241 firmware. Severity is critical (CVSS 9.8). Multiple camera devices by UDP Technology, Geutebrück and other vendors allow unauthenticated remote access to sensitive files due to default user authentication settings. This can lead to manipulation of the device and denial of service.
How urgent is CVE-2021-33543?
Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
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- CVE-2021-33553 HIGH 7.2 UPGRADE UPGRADE Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to command injection, w
- CVE-2021-33552 HIGH 7.2 UPGRADE UPGRADE Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to command injection, w
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