Buffer 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 Vigor2133/2762/2832 3.9.9 and earlier and Vigor165/166 4.2.7 and earlier and Vigor2135/2765/2766 4.4.5.1 and earlier and Vigor2865/2866/2927 4.4.5.3 and earlier and Vigor2962/3910 4.3.2.8/4.4.3.1 and earlier and Vigor3912 4.3.6.1 and earlier allows a remote attacker to execute arbitrary code via the CGI parser's handling of the "Content-Length" header of HTTP POST requests.
This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 46 products from draytek, from draytek, from draytek and 43 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2025, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2025-02-27T21:15:37.123
2025-05-28T16:23:26.310
Analyzed
CVSSv3.1: 9.8 (CRITICAL)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | draytek | vigor2620_firmware | < 3.9.9.1 | Yes |
| Hardware | draytek | vigor2620 | - | No |
| Operating System | draytek | vigorlte200_firmware | < 3.9.9.1 | Yes |
| Hardware | draytek | vigorlte200 | - | No |
| Operating System | draytek | vigor2860_firmware | < 3.9.8.3 | Yes |
| Hardware | draytek | vigor2860 | - | No |
| Operating System | draytek | vigor2925_firmware | < 3.9.8.3 | Yes |
| Hardware | draytek | vigor2925 | - | No |
| Operating System | draytek | vigor2862_firmware | < 3.9.9.8 | Yes |
| Hardware | draytek | vigor2862 | - | No |
| Operating System | draytek | vigor2926_firmware | < 3.9.9.8 | Yes |
| Hardware | draytek | vigor2926 | - | No |
| Operating System | draytek | vigor2133_firmware | < 3.9.9.2 | Yes |
| Hardware | draytek | vigor2133 | - | No |
| Operating System | draytek | vigor2762_firmware | < 3.9.9.2 | Yes |
| Hardware | draytek | vigor2762 | - | No |
| Operating System | draytek | vigor2832_firmware | < 3.9.9.2 | Yes |
| Hardware | draytek | vigor2832 | - | No |
| Operating System | draytek | vigor2135_firmware | < 4.4.5.5 | Yes |
| Hardware | draytek | vigor2135 | - | No |
| Operating System | draytek | vigor2765_firmware | < 4.4.5.5 | Yes |
| Hardware | draytek | vigor2765 | - | No |
| Operating System | draytek | vigor2766_firmware | < 4.4.5.5 | Yes |
| Hardware | draytek | vigor2766 | - | No |
| Operating System | draytek | vigor2763_firmware | < 4.4.5.5 | Yes |
| Hardware | draytek | vigor2763 | - | No |
| Operating System | draytek | vigor2865_firmware | < 4.4.5.8 | Yes |
| Hardware | draytek | vigor2865 | - | No |
| Operating System | draytek | vigor2866_firmware | < 4.4.5.8 | Yes |
| Hardware | draytek | vigor2866 | - | No |
| Operating System | draytek | vigor2927_firmware | < 4.4.5.8 | Yes |
| Hardware | draytek | vigor2927 | - | No |
| Operating System | draytek | vigor2962_firmware | < 4.3.2.9 | Yes |
| Operating System | draytek | vigor2962_firmware | < 4.4.3.2 | Yes |
| Hardware | draytek | vigor2962 | - | No |
| Operating System | draytek | vigor3910_firmware | < 4.3.2.9 | Yes |
| Operating System | draytek | vigor3910_firmware | < 4.4.3.2 | Yes |
| Hardware | draytek | vigor3910 | - | No |
| Operating System | draytek | vigor3912_firmware | < 4.4.3.2 | Yes |
| Hardware | draytek | vigor3912 | - | No |
| Operating System | draytek | vigor2915_firmware | < 4.4.5 | Yes |
| Hardware | draytek | vigor2915 | - | No |
| Operating System | draytek | vigor1000b_firmware | < 4.4.3.2 | Yes |
| Hardware | draytek | vigor1000b | - | No |
| Operating System | draytek | vigor2952_firmware | < 3.9.8.5 | Yes |
| Hardware | draytek | vigor2952 | - | No |
| Operating System | draytek | vigor3220_firmware | < 3.9.8.5 | Yes |
| Hardware | draytek | vigor3220 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For draytek's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.