CVE-2021-33547: Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to a stack-based buffer
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HIGH 7.2UPGRADEUPGRADEUPGRADE
CVE-2021-33547 is a high-severity flaw (CVSS 7.2) 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 are vulnerable to a stack-based buffer overflow condition in the profile parameter which may allow an attacker to remotely execute arbitrary code.
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
geutebrueck g-cam ebc-2110 firmware UPGRADE
Affected: <= 1.12.0.27 · 1.12.13.2 · 1.12.14.5
Fixed in: newer than 1.12.0.27
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
geutebrueck g-cam ebc-2111 firmware UPGRADE
Affected: <= 1.12.0.27 · 1.12.13.2 · 1.12.14.5
Fixed in: newer than 1.12.0.27
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
geutebrueck g-cam efd-2241 firmware UPGRADE
Affected: <= 1.12.0.27 · 1.12.13.2 · 1.12.14.5
Fixed in: newer than 1.12.0.27
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
geutebrueck g-cam efd-2250 firmware UPGRADE
Affected: <= 1.12.0.27 · 1.12.13.2 · 1.12.14.5
Fixed in: newer than 1.12.0.27
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
geutebrueck g-cam ethc-2230 firmware UPGRADE
Affected: <= 1.12.0.27 · 1.12.13.2 · 1.12.14.5
Fixed in: newer than 1.12.0.27
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
geutebrueck g-cam ethc-2239 firmware UPGRADE
Affected: <= 1.12.0.27 · 1.12.13.2 · 1.12.14.5
Fixed in: newer than 1.12.0.27
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page 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-2021-33547?
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-2021-33547 being exploited?
CVE-2021-33547 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-2021-33547 affect?
CVE-2021-33547 affects g-cam ebc-2110 firmware, g-cam ebc-2111 firmware, g-cam efd-2241 firmware. Severity is high (CVSS 7.2). Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to a stack-based buffer overflow condition in the profile parameter which may allow an attacker to remotely execute arbitrary code.
How urgent is CVE-2021-33547?
Priority 52/100. High severity; Public exploit reference
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