CVE-2024-41592

Severity: high (CVSS 8.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-10-03 · updated 2026-06-17
Weakness: CWE-121

Description

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.

Affected products

DrayTek Vigor1000B Firmware: before 4.3.2.8; from 4.4.0.0 before 4.4.3.1 — fixed in 4.3.2.8, 4.4.3.1
DrayTek Vigor165 Firmware: before 4.2.7 — fixed in 4.2.7
DrayTek Vigor166 Firmware: before 4.2.7 — fixed in 4.2.7
DrayTek Vigor2133 Firmware: before 3.9.9 — fixed in 3.9.9
DrayTek Vigor2135 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
DrayTek Vigor2620 Firmware: before 3.9.8.9 — fixed in 3.9.8.9
DrayTek Vigor2762 Firmware: before 3.9.9 — fixed in 3.9.9
DrayTek Vigor2763 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
DrayTek Vigor2765 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
DrayTek Vigor2766 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
DrayTek Vigor2832 Firmware: before 3.9.9 — fixed in 3.9.9
DrayTek Vigor2860 Firmware: before 3.9.8 — fixed in 3.9.8
DrayTek Vigor2862 Firmware: before 3.9.9.5 — fixed in 3.9.9.5
DrayTek Vigor2865 Firmware: before 4.4.5.2 — fixed in 4.4.5.2
DrayTek Vigor2866 Firmware: before 4.4.5.2 — fixed in 4.4.5.2
DrayTek Vigor2915 Firmware: before 4.4.5.3 — fixed in 4.4.5.3
DrayTek Vigor2925 Firmware: before 3.9.8 — fixed in 3.9.8
DrayTek Vigor2926 Firmware: before 3.9.9.5 — fixed in 3.9.9.5
DrayTek Vigor2952 Firmware: before 3.9.8.2 — fixed in 3.9.8.2
DrayTek Vigor2962 Firmware: before 4.3.2.8; from 4.4.0.0 before 4.4.3.1 — fixed in 4.3.2.8, 4.4.3.1
DrayTek Vigor3220 Firmware: before 3.9.8.2 — fixed in 3.9.8.2
DrayTek Vigor3910 Firmware: before 4.3.2.8; from 4.4.0.0 before 4.4.3.1 — fixed in 4.3.2.8, 4.4.3.1
DrayTek Vigor3912 Firmware: before 4.3.6.1 — fixed in 4.3.6.1
DrayTek Vigorlte200 Firmware: before 3.9.8.9 — fixed in 3.9.8.9

How to fix

Upgrade to a fixed version: DrayTek Vigor1000B Firmware 4.3.2.8, 4.4.3.1; DrayTek Vigor165 Firmware 4.2.7; DrayTek Vigor166 Firmware 4.2.7; DrayTek Vigor2133 Firmware 3.9.9; DrayTek Vigor2135 Firmware 4.4.5.3; DrayTek Vigor2620 Firmware 3.9.8.9; DrayTek Vigor2762 Firmware 3.9.9; DrayTek Vigor2763 Firmware 4.4.5.3; DrayTek Vigor2765 Firmware 4.4.5.3; DrayTek Vigor2766 Firmware 4.4.5.3; DrayTek Vigor2832 Firmware 3.9.9; DrayTek Vigor2860 Firmware 3.9.8. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-41592 or the next vulnerability affects your stack