How severe is CVE-2024-41338?

CVE-2024-41338 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-41338 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-41338?

CVE-2024-41338 primarily affects Draytek Vigor165 Firmware. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-41338?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-41338 have an EU (EUVD) identifier?

Yes. CVE-2024-41338 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5967.

When was CVE-2024-41338 published?

CVE-2024-41338 was published on 2025-02-27 and last updated on 2026-07-05.

CVE-2024-41338

CVE-2024-41338 is a high-severity vulnerability in Draytek Vigor165 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5967
Weakness: CWE-476
Affected product: Draytek Vigor165 Firmware
Published: 2025-02-27
Last modified: 2026-07-05

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2024-41338?: CVE-2024-41338 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-41338 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-41338?: CVE-2024-41338 primarily affects Draytek Vigor165 Firmware. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-41338?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-41338 have an EU (EUVD) identifier?: Yes. CVE-2024-41338 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5967.
When was CVE-2024-41338 published?: CVE-2024-41338 was published on 2025-02-27 and last updated on 2026-07-05.

References

https://medium.com/faraday/advisory-multiple-vulnerabilities-affecting-draytek-routers-78a6cb8b3946

EU advisories (EUVD)

http://draytek.com

Affected products (20)

cpe:2.3:o:draytek:vigor165_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor166_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigorlte200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2860_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2925_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2862_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2926_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2133_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2762_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2832_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2135_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2765_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2766_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2865_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2866_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2927_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor2962_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor3910_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:draytek:vigor3912_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Draytek Vigor165 Firmware

CVE-2022-32548 — Critical (CVSS 10.0): An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1.…
CVE-2024-41593 — Critical (CVSS 9.8): DrayTek Vigor310 devices through 4.3.2.6 allow a remote attacker to execute arbitrary code via the function…
CVE-2023-33778 — Critical (CVSS 9.8): Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches…
CVE-2024-41339 — High (CVSS 8.8): An issue in the CGI endpoint used to upload configurations in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor…
CVE-2024-41334 — High (CVSS 8.8): 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,…
CVE-2024-41340 — High (CVSS 8.4): An issue in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/2925 prior…

All CVEs affecting Draytek Vigor165 Firmware →

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