What’s Vulnerable › Vulnerabilities
CVE-2024-41338
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-02-27 · updated 2026-07-05
- Weakness: CWE-476
Description
A NULL pointer dereference 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 cause a Denial of Service (DoS) via a crafted DHCP request.
Affected products
- DrayTek Vigor165 Firmware: before 4.2.6 — fixed in 4.2.6
- DrayTek Vigor166 Firmware: before 4.2.6 — fixed in 4.2.6
- DrayTek Vigor2133 Firmware: before 3.9.8 — fixed in 3.9.8
- DrayTek Vigor2135 Firmware: before 4.4.5.1 — fixed in 4.4.5.1
- DrayTek Vigor2620 Firmware: before 3.9.8.8 — fixed in 3.9.8.8
- DrayTek Vigor2762 Firmware: before 3.9.8 — fixed in 3.9.8
- DrayTek Vigor2765 Firmware: before 4.4.5.1 — fixed in 4.4.5.1
- DrayTek Vigor2766 Firmware: before 4.4.5.1 — fixed in 4.4.5.1
- DrayTek Vigor2832 Firmware: before 3.9.8 — fixed in 3.9.8
- DrayTek Vigor2860 Firmware: before 3.9.7 — fixed in 3.9.7
- DrayTek Vigor2862 Firmware: before 3.9.9.4 — fixed in 3.9.9.4
- DrayTek Vigor2865 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
- DrayTek Vigor2866 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
- DrayTek Vigor2925 Firmware: before 3.9.7 — fixed in 3.9.7
- DrayTek Vigor2926 Firmware: before 3.9.9.4 — fixed in 3.9.9.4
- DrayTek Vigor2927 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
- DrayTek Vigor2962 Firmware: before 4.3.2.7 — fixed in 4.3.2.7
- DrayTek Vigor3910 Firmware: before 4.3.2.7 — fixed in 4.3.2.7
- DrayTek Vigor3912 Firmware: before 4.3.5.2 — fixed in 4.3.5.2
- DrayTek Vigorlte200 Firmware: before 3.9.8.8 — fixed in 3.9.8.8
How to fix
Upgrade to a fixed version: DrayTek Vigor165 Firmware 4.2.6; DrayTek Vigor166 Firmware 4.2.6; DrayTek Vigor2133 Firmware 3.9.8; DrayTek Vigor2135 Firmware 4.4.5.1; DrayTek Vigor2620 Firmware 3.9.8.8; DrayTek Vigor2762 Firmware 3.9.8; DrayTek Vigor2765 Firmware 4.4.5.1; DrayTek Vigor2766 Firmware 4.4.5.1; DrayTek Vigor2832 Firmware 3.9.8; DrayTek Vigor2860 Firmware 3.9.7; DrayTek Vigor2862 Firmware 3.9.9.4; DrayTek Vigor2865 Firmware 4.4.5.3. Check the vendor advisory for mitigations.
References
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