Review reviewHigh

CVE-2024-41338

vigor165 firmware, vigor165

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.

CVSS: 7.5
EPSS: 0.44%
CISA KEV: Not listed
Published: 2025.02.28

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.44%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: vigor165 firmware, vigor165
Affected versions: < 4.2.6, < 3.9.8.8, < 3.9.7, < 3.9.9.4, < 3.9.8, < 4.4.5.1, < 4.4.5.3, < 4.3.2.7, < 4.3.5.2
Fixed versions: 4.2.6, 3.9.8.8, 3.9.7, 3.9.9.4, 3.9.8, 4.4.5.1, 4.4.5.3, 4.3.2.7, 4.3.5.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that vigor165 firmware, vigor165 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-476