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Fencer Vulns
high 7.5

CVE-2024-41338 json

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…

published 2025-02-27 20 mo ago modified 2026-07-05 4 mo ago also EUVD-2025-5967

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

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.

Patch / fix

  • draytek vigor165_firmware 4.2.6
  • draytek vigor166_firmware 4.2.6
  • draytek vigor2620_firmware 3.9.8.8
  • draytek vigorlte200_firmware 3.9.8.8
  • draytek vigor2860_firmware 3.9.7
  • draytek vigor2925_firmware 3.9.7
  • draytek vigor2862_firmware 3.9.9.4
  • draytek vigor2926_firmware 3.9.9.4
  • draytek vigor2133_firmware 3.9.8
  • draytek vigor2762_firmware 3.9.8
  • draytek vigor2832_firmware 3.9.8
  • draytek vigor2135_firmware 4.4.5.1
  • draytek vigor2765_firmware 4.4.5.1
  • draytek vigor2766_firmware 4.4.5.1
  • draytek vigor2865_firmware 4.4.5.3
  • draytek vigor2866_firmware 4.4.5.3
  • draytek vigor2927_firmware 4.4.5.3
  • draytek vigor2962_firmware 4.3.2.7
  • draytek vigor3910_firmware 4.3.2.7
  • draytek vigor3912_firmware 4.3.5.2

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.