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Vulnerability record · CVE-2024-51138 · published 27 February 2025

CVE-2024-51138: Draytek vigor3912 firmware stack-based buffer overflow vulnerability

Draytek · Vigor3912 Firmware

Vigor165/166 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; Vigor2133/2762/2832 3.9.9 and earlier; Vigor2135/2765/2766 4.4.5. and earlier; Vigor2865/2866/2927 4.4.5.3 and earlier; Vigor2962 4.3.2.8 and earlier; Vigor3912 4.3.6.1 and earlier; Vigor3910 4.4.3.1 and earlier a stack-based buffer overflow vulnerability has been identified in the URL parsing functionality of the TR069 STUN server. This flaw occurs due to insufficient bounds checking on the amount of URL parameters, allowing an attacker to exploit the overflow by sending a maliciously crafted request. Consequently, a remote attacker can execute arbitrary code with elevated privileges.

9.8 CVSS 3.1 Critical EPSS 1.1% · top 37.1% CWE-121 · Stack-based buffer overflow
9.8CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
23Affected product versions listed by NVD
1References
5 Jul 2026Last modified by NVD

Description

Vigor165/166 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; Vigor2133/2762/2832 3.9.9 and earlier; Vigor2135/2765/2766 4.4.5. and earlier; Vigor2865/2866/2927 4.4.5.3 and earlier; Vigor2962 4.3.2.8 and earlier; Vigor3912 4.3.6.1 and earlier; Vigor3910 4.4.3.1 and earlier a stack-based buffer overflow vulnerability has been identified in the URL parsing functionality of the TR069 STUN server. This flaw occurs due to insufficient bounds checking on the amount of URL parameters, allowing an attacker to exploit the overflow by sending a maliciously crafted request. Consequently, a remote attacker can execute arbitrary code with elevated privileges.

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

Affected products

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

References

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

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Related vulnerabilities

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

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-2023-31447Draytek vigor2620 firmware code injection vulnerabilityuser_login.cgi on Draytek Vigor2620 devices before 3.9.8.4 (and on all versions of Vigor2925 devices) allows attackers to send a crafted payload to m…EPSS 0.94%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-2024-51138), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.