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CVE-2024-39815: Improper check or handling of exceptional conditions vulnerability affecting Vonets industrial wifi brid

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This month
CRITICAL 9.1UPGRADEUPGRADEUPGRADE

CVE-2024-39815 is a critical-severity flaw (CVSS 9.1) 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.

Improper check or handling of exceptional conditions vulnerability 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 cause a denial of service. A specially-crafted HTTP request to pre-authentication resources can crash the service.

Why this priority

  • Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score9.1 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance0.8% (top 44%)
CISA exploited listNo
WeaknessCWE-703
Published2024-08-12
Last modified2026-06-17
Publisher (CNA): ICS-CERT · Vendor: vonets

Share: LinkedIn · X · Reddit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

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 source NVD · 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-2024-39815?

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-2024-39815 being exploited?

CVE-2024-39815 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-2024-39815 affect?

CVE-2024-39815 affects var1200-h firmware, var1200-l firmware, var600-h firmware. Severity is critical (CVSS 9.1). Improper check or handling of exceptional conditions vulnerability 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 cause a

How urgent is CVE-2024-39815?

Priority 46/100. Critical severity

Software pages

Wi-Fi vulnerabilities

Related CVEs

References

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