CVE-2024-39947: A vulnerability has been found in Dahua products.After obtaining the ordinary user's username and password, th
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Routine
MEDIUM 6.5UPGRADEMITIGATEUPGRADE
CVE-2024-39947 is a medium-severity flaw (CVSS 6.5) affecting nvr4104-4ks2\/l firmware, nvr4108-4ks2\/l firmware, nvr4116-4ks2\/l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A vulnerability has been found in Dahua products.After obtaining the ordinary user's username and password, the attacker can send a carefully crafted data packet to the interface with vulnerabilities, causing the device to crash.
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
dahuasecurity nvr4104-4ks2\/l firmware UPGRADE
Affected: < 4.003.0000000.1.r.240515
Fixed in: 4.003.0000000.1.r.240515
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.
dahuasecurity nvr4108-4ks2\/l firmware MITIGATE
Affected: 4.003.0000000.1.r.240515
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.003.0000000.1.r.240515
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.
dahuasecurity nvr4116-4ks2\/l firmware UPGRADE
Affected: < 4.003.0000000.1.r.240515
Fixed in: 4.003.0000000.1.r.240515
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.
dahuasecurity nvr4104-p-4ks2\/l firmware UPGRADE
Affected: < 4.003.0000000.1.r.240515
Fixed in: 4.003.0000000.1.r.240515
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.
dahuasecurity nvr4108-p-4ks2\/l firmware UPGRADE
Affected: < 4.003.0000000.1.r.240515
Fixed in: 4.003.0000000.1.r.240515
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.
dahuasecurity nvr4108-8p-4ks2\/l firmware UPGRADE
Affected: < 4.003.0000000.1.r.240515
Fixed in: 4.003.0000000.1.r.240515
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-2024-39947?
nvr4104-4ks2\/l firmware: upgrade to 4.003.0000000.1.r.240515; nvr4108-4ks2\/l firmware: mitigate or apply the listed mitigation; nvr4116-4ks2\/l firmware: upgrade to 4.003.0000000.1.r.240515. Exact commands for each OS are on this page.
Is CVE-2024-39947 being exploited?
CVE-2024-39947 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-2024-39947 affect?
CVE-2024-39947 affects nvr4104-4ks2\/l firmware, nvr4108-4ks2\/l firmware, nvr4116-4ks2\/l firmware. Severity is medium (CVSS 6.5). A vulnerability has been found in Dahua products.After obtaining the ordinary user's username and password, the attacker can send a carefully crafted data packet to the interface with vulnerabilities, causing the device to crash.
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