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Vulnerability record · CVE-2024-41588 · published 3 October 2024

CVE-2024-41588: Draytek vigor2620 firmware classic buffer overflow vulnerability

Draytek · Vigor2620 Firmware

The CGI endpoints v2x00.cgi and cgiwcg.cgi of DrayTek Vigor3910 devices through 4.3.2.6 are vulnerable to buffer overflows, by authenticated users, because of missing bounds checking on parameters passed through POST requests to the strncpy function.

8.0 CVSS 3.1 High EPSS 0.33% · top 76.6% CWE-120 · Classic buffer overflow
8.0CVSS 3.1 base score
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
24Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The CGI endpoints v2x00.cgi and cgiwcg.cgi of DrayTek Vigor3910 devices through 4.3.2.6 are vulnerable to buffer overflows, by authenticated users, because of missing bounds checking on parameters passed through POST requests to the strncpy function.

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

Affected products

24 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.forescout.com/resources/draybreak-draytek-research/ MitigationTechnical DescriptionThird Party Advisory
https://www.forescout.com/resources/draytek14-vulnerabilities Broken Link

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-51138Draytek vigor3912 firmware stack-based buffer overflow vulnerabilityVigor165/166 4.2.7 and earlier; Vigor2620/LTE200 3.9.8.9 and earlier; Vigor2860/2925 3.9.8 and earlier; Vigor2862/2926 3.9.9.5 and earlier; Vigor2133…EPSS 1.1%9.8CVE-2024-51139Draytek vigor2620 firmware classic buffer overflow vulnerabilityBuffer Overflow vulnerability in Vigor2620/LTE200 3.9.8.9 and earlier and Vigor2860/2925 3.9.8 and earlier and Vigor2862/2926 3.9.9.5 and earlier and…EPSS 1.00%9.8CVE-2024-41593Draytek vigor3912 firmware out-of-bounds write vulnerabilityDrayTek 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-ext…EPSS 0.89%9.8CVE-2023-33778Draytek myvigor hard-coded credentials vulnerabilityDraytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and …EPSS 0.59%9.8CVE-2022-32548Draytek vigor3910 firmware classic buffer overflow vulnerabilityAn issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer over…EPSS 34%8.8CVE-2024-41334Draytek vigor166 firmware improper certificate validation vulnerabilityDraytek 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…EPSS 0.38%8.8CVE-2024-41339Draytek vigor165 firmware unrestricted file upload vulnerabilityAn issue in the CGI endpoint used to upload configurations in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vi…EPSS 0.65%8.4CVE-2024-41340Draytek vigor165 firmware unrestricted file upload vulnerabilityAn 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 to v3.9.7, Vigor 2862/2926 pri…EPSS 0.21%

Source: NIST National Vulnerability Database (record CVE-2024-41588), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.