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Fencer Vulns
critical 9.8

CVE-2024-41593 json

DrayTek Vigor310 devices through 4.3.2.6 allow a remote attacker to execute arbitrary code via the function ft_payload_dns(), because a byt…

published 2024-10-03 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-39090

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

DrayTek Vigor310 devices through 4.3.2.6 allow a remote attacker to execute arbitrary code via the function ft_payload_dns(), because a byte sign-extension operation occurs for the length argument of a _memcpy call, leading to a heap-based Buffer Overflow.

Patch / fix

  • draytek vigor3912_firmware 4.3.6.1
  • draytek vigor2962_firmware 4.3.2.8, 4.4.3.1
  • draytek vigor3910_firmware 4.3.2.8, 4.4.3.1
  • draytek vigor165_firmware 4.2.7
  • draytek vigor1000b_firmware 4.3.2.8, 4.4.3.1
  • draytek vigor166_firmware 4.2.7
  • draytek vigor2135_firmware 4.4.5.3
  • draytek vigor2763_firmware 4.4.5.3
  • draytek vigor2765_firmware 4.4.5.3
  • draytek vigor2865_firmware 4.4.5.2
  • draytek vigor2766_firmware 4.4.5.3
  • draytek vigor2866_firmware 4.4.5.2
  • draytek vigor2915_firmware 4.4.5.3

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.