CVE-2024-39791 is a critical-severity flaw (CVSS 10.0) affecting var1200-h firmware, var1200-l firmware, var600-h firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Stack-based buffer overflow vulnerabilities affecting Vonets
industrial wifi bridge relays and wifi bridge repeaters, software versions
3.3.23.6.9 and prior, enable an unauthenticated remote attacker to
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
vonets var1200-h firmware UPGRADE
Affected: <= 3.3.23.6.9
Fixed in: newer than 3.3.23.6.9
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.
vonets var1200-l firmware UPGRADE
Affected: <= 3.3.23.6.9
Fixed in: newer than 3.3.23.6.9
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.
vonets var600-h firmware UPGRADE
Affected: <= 3.3.23.6.9
Fixed in: newer than 3.3.23.6.9
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.
vonets vap11ac firmware UPGRADE
Affected: <= 3.3.23.6.9
Fixed in: newer than 3.3.23.6.9
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.
vonets vap11g-500s firmware UPGRADE
Affected: <= 3.3.23.6.9
Fixed in: newer than 3.3.23.6.9
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.
vonets vbg1200 firmware UPGRADE
Affected: <= 3.3.23.6.9
Fixed in: newer than 3.3.23.6.9
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-2024-39791?
var1200-h firmware: upgrade to newer than 3.3.23.6.9; var1200-l firmware: upgrade to newer than 3.3.23.6.9; var600-h firmware: upgrade to newer than 3.3.23.6.9. Exact commands for each OS are on this page.
Is CVE-2024-39791 being exploited?
CVE-2024-39791 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-2024-39791 affect?
CVE-2024-39791 affects var1200-h firmware, var1200-l firmware, var600-h firmware. Severity is critical (CVSS 10.0). Stack-based buffer overflow vulnerabilities affecting Vonets
industrial wifi bridge relays and wifi bridge repeaters, software versions
3.3.23.6.9 and prior, enable an unauthenticated remote attacker to
execute arbitrary code.
How urgent is CVE-2024-39791?
Priority 56/100. Critical severity; Remotely exploitable, no login, no user action
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