CVE-2024-41340: An issue in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/29
32
Routine
HIGH 8.4UPGRADEUPGRADEUPGRADE
CVE-2024-41340 is a high-severity flaw (CVSS 8.4) affecting vigor165 firmware, vigor166 firmware, vigor2620 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/2925 prior to v3.9.7, Vigor 2862/2926 prior to v3.9.9.4, Vigor 2133/2762/2832 prior to v3.9.8, Vigor 2135/2765/2766 prior to v4.4.5.1, Vigor 2865/2866/2927 prior to v4.4.5.3, Vigor 2962/3910 prior to v4.3.2.7, Vigor 3912 prior to v4.3.5.2, and Vigor 2925 up to v3.9.6 allows attackers to upload crafted APP Enforcement modules, leading to arb
Last updated 2026-07-05 · 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 vigor165 firmware UPGRADE
Affected: < 4.2.7
Fixed in: 4.2.7
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 vigor166 firmware UPGRADE
Affected: < 4.2.7
Fixed in: 4.2.7
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 vigorlte200 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 vigor2860 firmware UPGRADE
Affected: < 3.9.8
Fixed in: 3.9.8
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 vigor2925 firmware UPGRADE
Affected: < 3.9.8
Fixed in: 3.9.8
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-2024-41340?
vigor165 firmware: upgrade to 4.2.7; vigor166 firmware: upgrade to 4.2.7; vigor2620 firmware: upgrade to 3.9.8.9. Exact commands for each OS are on this page.
Is CVE-2024-41340 being exploited?
CVE-2024-41340 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-2024-41340 affect?
CVE-2024-41340 affects vigor165 firmware, vigor166 firmware, vigor2620 firmware. Severity is high (CVSS 8.4). An issue in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/2925 prior to v3.9.7, Vigor 2862/2926 prior to v3.9.9.4, Vigor 2133/2762/2832 prior to v3.9.8, Vigor 2135/2765/2766 prior to v4.4.5.
How urgent is CVE-2024-41340?
Priority 32/100. High severity
Related CVEs
CVE-2024-41339HIGH 8.8UPGRADEUPGRADE An issue in the CGI endpoint used to upload configurations in Draytek devices Vigor 165/166 prior to v4.2.6 ,
CVE-2024-41338HIGH 7.5UPGRADEUPGRADE A NULL pointer dereference in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.
CVE-2024-41593CRITICAL 9.8UPGRADEUPGRADE DrayTek Vigor310 devices through 4.3.2.6 allow a remote attacker to execute arbitrary code via the function ft
CVE-2024-41587MEDIUM 5.4UPGRADEUPGRADE Stored XSS, by authenticated users, is caused by poor sanitization of the Login Page Greeting message in DrayT
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