A buffer overflow vulnerability in the parameter of the CGI program in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to cause denial-of-service (DoS) conditions by sending a crafted HTTP request.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 96 products from zyxel, from zyxel, from zyxel and 93 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2023, 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.
2023-01-11T02:15:11.250
2026-02-25T16:22:31.707
Modified
CVSSv3.1: 6.5 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | zyxel | lte3301-plus_firmware | - | Yes |
| Hardware | zyxel | lte3301-plus | - | No |
| Operating System | zyxel | lte5388-m804_firmware | - | Yes |
| Hardware | zyxel | lte5388-m804 | - | No |
| Operating System | zyxel | lte5398-m904_firmware | - | Yes |
| Hardware | zyxel | lte5398-m904 | - | No |
| Operating System | zyxel | lte7240-m403_firmware | - | Yes |
| Hardware | zyxel | lte7240-m403 | - | No |
| Operating System | zyxel | lte7461-m602_firmware | - | Yes |
| Hardware | zyxel | lte7461-m602 | - | No |
| Operating System | zyxel | lte7480-m804_firmware | < 1.00\(abra.6\)c0 | Yes |
| Hardware | zyxel | lte7480-m804 | - | No |
| Operating System | zyxel | lte7480-s905_firmware | - | Yes |
| Hardware | zyxel | lte7480-s905 | - | No |
| Operating System | zyxel | lte7485-s905_firmware | - | Yes |
| Hardware | zyxel | lte7485-s905 | - | No |
| Operating System | zyxel | lte7490-m904_firmware | < 1.00\(abqy.5\)c0 | Yes |
| Hardware | zyxel | lte7490-m904 | - | No |
| Operating System | zyxel | nebula_lte3301-plus_firmware | < 1.15\(acca.3\)c0 | Yes |
| Hardware | zyxel | nebula_lte3301-plus | - | No |
| Operating System | zyxel | nebula_lte7461-m602_firmware | < 1.15\(acev.3\)c0 | Yes |
| Hardware | zyxel | nebula_lte7461-m602 | - | No |
| Operating System | zyxel | nebula_nr5101_firmware | < 1.15\(accg.3\)c0 | Yes |
| Hardware | zyxel | nebula_nr5101 | - | No |
| Operating System | zyxel | nebula_nr7101_firmware | < 1.15\(accc.3\)c0 | Yes |
| Hardware | zyxel | nebula_nr7101 | - | No |
| Operating System | zyxel | nr5101_firmware | < 1.00\(abvc.6\)c0 | Yes |
| Hardware | zyxel | nr5101 | - | No |
| Operating System | zyxel | nr7101_firmware | < 1.00\(abuv.7\)c0 | Yes |
| Hardware | zyxel | nr7101 | - | No |
| Operating System | zyxel | nr7102_firmware | < 1.00\(abyd.2\)c0 | Yes |
| Hardware | zyxel | nr7102 | - | No |
| Operating System | zyxel | dx3301-t0_firmware | - | Yes |
| Hardware | zyxel | dx3301-t0 | - | No |
| Operating System | zyxel | dx4510-b1_firmware | - | Yes |
| Hardware | zyxel | dx4510-b1 | - | No |
| Operating System | zyxel | dx5401-b0_firmware | - | Yes |
| Hardware | zyxel | dx5401-b0 | - | No |
| Operating System | zyxel | emg3525-t50b_firmware | - | Yes |
| Hardware | zyxel | emg3525-t50b | - | No |
| Operating System | zyxel | emg5523-t50b_firmware | - | Yes |
| Hardware | zyxel | emg5523-t50b | - | No |
| Operating System | zyxel | emg5723-t50k_firmware | - | Yes |
| Hardware | zyxel | emg5723-t50k | - | No |
| Operating System | zyxel | ex3301-t0_firmware | - | Yes |
| Hardware | zyxel | ex3301-t0 | - | No |
| Operating System | zyxel | ex3510-b0_firmware | < 5.17\(abup.7\)c0 | Yes |
| Hardware | zyxel | ex3510-b0 | - | No |
| Operating System | zyxel | ex5401-b0_firmware | - | Yes |
| Hardware | zyxel | ex5401-b0 | - | No |
| Operating System | zyxel | ex5501-b0_firmware | - | Yes |
| Hardware | zyxel | ex5501-b0 | - | No |
| Operating System | zyxel | ex5510-b0_firmware | < 5.17\(abqx.7\)c0 | Yes |
| Hardware | zyxel | ex5510-b0 | - | No |
| Operating System | zyxel | ex5512-t0_firmware | - | Yes |
| Hardware | zyxel | ex5512-t0 | - | No |
| Operating System | zyxel | ex5600-t1_firmware | - | Yes |
| Hardware | zyxel | ex5600-t1 | - | No |
| Operating System | zyxel | ex5601-t0_firmware | - | Yes |
| Hardware | zyxel | ex5601-t0 | - | No |
| Operating System | zyxel | ex5601-t1_firmware | - | Yes |
| Hardware | zyxel | ex5601-t1 | - | No |
| Operating System | zyxel | vmg3927-t50k_firmware | - | Yes |
| Hardware | zyxel | vmg3927-t50k | - | No |
| Operating System | zyxel | vmg4005-b50a_firmware | - | Yes |
| Hardware | zyxel | vmg4005-b50a | - | No |
| Operating System | zyxel | vmg4005-b60a_firmware | - | Yes |
| Hardware | zyxel | vmg4005-b60a | - | No |
| Operating System | zyxel | vmg8623-t50b_firmware | - | Yes |
| Hardware | zyxel | vmg8623-t50b | - | No |
| Operating System | zyxel | vmg8825-t50k_firmware | - | Yes |
| Hardware | zyxel | vmg8825-t50k | - | No |
| Operating System | zyxel | ax7501-b0_firmware | - | Yes |
| Hardware | zyxel | ax7501-b0 | - | No |
| Operating System | zyxel | pm3100-t0_firmware | - | Yes |
| Hardware | zyxel | pm3100-t0 | - | No |
| Operating System | zyxel | pm5100-t0_firmware | - | Yes |
| Hardware | zyxel | pm5100-t0 | - | No |
| Operating System | zyxel | pm7300-t0_firmware | - | Yes |
| Hardware | zyxel | pm7300-t0 | - | No |
| Operating System | zyxel | pm7320-b0_firmware | - | Yes |
| Hardware | zyxel | pm7320-b0 | - | No |
| Operating System | zyxel | pmg5317-t20b_firmware | - | Yes |
| Hardware | zyxel | pmg5317-t20b | - | No |
| Operating System | zyxel | pmg5617-t20b2_firmware | - | Yes |
| Hardware | zyxel | pmg5617-t20b2 | - | No |
| Operating System | zyxel | pmg5617ga_firmware | - | Yes |
| Hardware | zyxel | pmg5617ga | - | No |
| Operating System | zyxel | pmg5622ga_firmware | - | Yes |
| Hardware | zyxel | pmg5622ga | - | No |
| Operating System | zyxel | wx3100-t0_firmware | - | Yes |
| Hardware | zyxel | wx3100-t0 | - | No |
| Operating System | zyxel | wx3401-b0_firmware | - | Yes |
| Hardware | zyxel | wx3401-b0 | - | No |
| Operating System | zyxel | wx5600-t0_firmware | - | Yes |
| Hardware | zyxel | wx5600-t0 | - | 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 zyxel'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.