Buffer overflow in Draytek Vigor1000b

CVE-2024-41593

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.

Vulnerability class: Buffer Overflow

EPSS: 0.009 (55.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-41593?
CVE-2024-41593 is a critical-severity vulnerability in Draytek Vigor1000b, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2024-10-03.
How severe is CVE-2024-41593?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-41593 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.