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CVE-2024-41338

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductDraytek Vigor165 Firmware
PublishedFeb 27, 2025
First seenFeb 27, 2025
Weakness typeCWE-476NULL pointer dereference

How to fix

Update
  • draytek vigor165_firmware4.2.6 or later
  • draytek vigor166_firmware4.2.6 or later
  • draytek vigor2620_firmware3.9.8.8 or later
  • draytek vigorlte200_firmware3.9.8.8 or later
  • draytek vigor2860_firmware3.9.7 or later
  • draytek vigor2925_firmware3.9.7 or later
  • draytek vigor2862_firmware3.9.9.4 or later
  • draytek vigor2926_firmware3.9.9.4 or later
  • draytek vigor2133_firmware3.9.8 or later
  • draytek vigor2762_firmware3.9.8 or later
  • draytek vigor2832_firmware3.9.8 or later
  • draytek vigor2135_firmware4.4.5.1 or later

Affected products

ProductAffected versionsFixed in
draytek vigor165_firmwarev < 4.2.64.2.6
draytek vigor166_firmwarev < 4.2.64.2.6
draytek vigor2620_firmwarev < 3.9.8.83.9.8.8
draytek vigorlte200_firmwarev < 3.9.8.83.9.8.8
draytek vigor2860_firmwarev < 3.9.73.9.7
draytek vigor2925_firmwarev < 3.9.73.9.7
draytek vigor2862_firmwarev < 3.9.9.43.9.9.4
draytek vigor2926_firmwarev < 3.9.9.43.9.9.4
draytek vigor2133_firmwarev < 3.9.83.9.8
draytek vigor2762_firmwarev < 3.9.83.9.8
draytek vigor2832_firmwarev < 3.9.83.9.8
draytek vigor2135_firmwarev < 4.4.5.14.4.5.1
draytek vigor2765_firmwarev < 4.4.5.14.4.5.1
draytek vigor2766_firmwarev < 4.4.5.14.4.5.1
draytek vigor2865_firmwarev < 4.4.5.34.4.5.3
draytek vigor2866_firmwarev < 4.4.5.34.4.5.3
draytek vigor2927_firmwarev < 4.4.5.34.4.5.3
draytek vigor2962_firmwarev < 4.3.2.74.3.2.7
draytek vigor3910_firmwarev < 4.3.2.74.3.2.7
draytek vigor3912_firmwarev < 4.3.5.24.3.5.2

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