CVE-2024-41338

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.

Published: 2025-02-27 Last update: 2025-06-03 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-41338 is rated Moderate Risk (41.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.12%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-41338

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.17% 0.12% -0.05%
2 2025-11-18 0.11% 0.17% +0.06%
3 2025-06-29 — 0.11% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-41338

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-41338

Affected software / configurations for CVE-2024-41338

Vendor Product Version Raw CPE
draytek vigor165_firmware < 4.2.6 cpe:2.3:o:draytek:vigor165_firmware:*:*:*:*:*:*:*:*
draytek vigor166_firmware < 4.2.6 cpe:2.3:o:draytek:vigor166_firmware:*:*:*:*:*:*:*:*
draytek vigor2620_firmware < 3.9.8.8 cpe:2.3:o:draytek:vigor2620_firmware:*:*:*:*:*:*:*:*
draytek vigorlte200_firmware < 3.9.8.8 cpe:2.3:o:draytek:vigorlte200_firmware:*:*:*:*:*:*:*:*
draytek vigor2860_firmware < 3.9.7 cpe:2.3:o:draytek:vigor2860_firmware:*:*:*:*:*:*:*:*
draytek vigor2925_firmware < 3.9.7 cpe:2.3:o:draytek:vigor2925_firmware:*:*:*:*:*:*:*:*
draytek vigor2862_firmware < 3.9.9.4 cpe:2.3:o:draytek:vigor2862_firmware:*:*:*:*:*:*:*:*
draytek vigor2926_firmware < 3.9.9.4 cpe:2.3:o:draytek:vigor2926_firmware:*:*:*:*:*:*:*:*
draytek vigor2133_firmware < 3.9.8 cpe:2.3:o:draytek:vigor2133_firmware:*:*:*:*:*:*:*:*
draytek vigor2762_firmware < 3.9.8 cpe:2.3:o:draytek:vigor2762_firmware:*:*:*:*:*:*:*:*
draytek vigor2832_firmware < 3.9.8 cpe:2.3:o:draytek:vigor2832_firmware:*:*:*:*:*:*:*:*
draytek vigor2135_firmware < 4.4.5.1 cpe:2.3:o:draytek:vigor2135_firmware:*:*:*:*:*:*:*:*
draytek vigor2765_firmware < 4.4.5.1 cpe:2.3:o:draytek:vigor2765_firmware:*:*:*:*:*:*:*:*
draytek vigor2766_firmware < 4.4.5.1 cpe:2.3:o:draytek:vigor2766_firmware:*:*:*:*:*:*:*:*
draytek vigor2865_firmware < 4.4.5.3 cpe:2.3:o:draytek:vigor2865_firmware:*:*:*:*:*:*:*:*
draytek vigor2866_firmware < 4.4.5.3 cpe:2.3:o:draytek:vigor2866_firmware:*:*:*:*:*:*:*:*
draytek vigor2927_firmware < 4.4.5.3 cpe:2.3:o:draytek:vigor2927_firmware:*:*:*:*:*:*:*:*
draytek vigor2962_firmware < 4.3.2.7 cpe:2.3:o:draytek:vigor2962_firmware:*:*:*:*:*:*:*:*
draytek vigor3910_firmware < 4.3.2.7 cpe:2.3:o:draytek:vigor3910_firmware:*:*:*:*:*:*:*:*
draytek vigor3912_firmware < 4.3.5.2 cpe:2.3:o:draytek:vigor3912_firmware:*:*:*:*:*:*:*:*

References for CVE-2024-41338

cvelogic Threat Intelligence