CVE-2024-41592: DrayTek Vigor3910 devices through 4.3.2.6 have a stack-based overflow when processing query string parameters
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HIGH 8.0UPGRADEUPGRADEUPGRADE
CVE-2024-41592 is a high-severity flaw (CVSS 8.0) affecting vigor2952 firmware, vigor2620 firmware, vigor2915 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
DrayTek Vigor3910 devices through 4.3.2.6 have a stack-based overflow when processing query string parameters because GetCGI mishandles extraneous ampersand characters and long key-value pairs.
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
draytek vigor2952 firmware UPGRADE
Affected: < 3.9.8.2
Fixed in: 3.9.8.2
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.
draytek vigor2620 firmware UPGRADE
Affected: < 3.9.8.9
Fixed in: 3.9.8.9
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.
draytek vigor2915 firmware UPGRADE
Affected: < 4.4.5.3
Fixed in: 4.4.5.3
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.
draytek vigor2866 firmware UPGRADE
Affected: < 4.4.5.2
Fixed in: 4.4.5.2
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.
draytek vigor2766 firmware UPGRADE
Affected: < 4.4.5.3
Fixed in: 4.4.5.3
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.
draytek vigor2865 firmware UPGRADE
Affected: < 4.4.5.2
Fixed in: 4.4.5.2
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-2024-41592?
vigor2952 firmware: upgrade to 3.9.8.2; vigor2620 firmware: upgrade to 3.9.8.9; vigor2915 firmware: upgrade to 4.4.5.3. Exact commands for each OS are on this page.
Is CVE-2024-41592 being exploited?
CVE-2024-41592 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-2024-41592 affect?
CVE-2024-41592 affects vigor2952 firmware, vigor2620 firmware, vigor2915 firmware. Severity is high (CVSS 8.0). DrayTek Vigor3910 devices through 4.3.2.6 have a stack-based overflow when processing query string parameters because GetCGI mishandles extraneous ampersand characters and long key-value pairs.
How urgent is CVE-2024-41592?
Priority 51/100. High severity; Public exploit reference
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