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NVD Vulnerability Details :
CVE-2025-7673
Analyzed
More InfoOfficial Page
Source-security@zyxel.com.tw
View Known Exploited Vulnerability (KEV) details
Published At-16 Jul, 2025 | 07:15
Updated At-14 Jan, 2026 | 17:52

A buffer overflow vulnerability in the URL parser of the zhttpd web server in Zyxel VMG8825-T50K firmware versions prior to V5.50(ABOM.5)C0 could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and potentially execute arbitrary code by sending a specially crafted HTTP request.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches

Zyxel Networks Corporation
zyxel
>>emg3525-t50b_firmware>>Versions before 5.50\(abpm.4\)c0(exclusive)
cpe:2.3:o:zyxel:emg3525-t50b_firmware:*:*:*:*:emea:*:*:*
Zyxel Networks Corporation
zyxel
>>emg3525-t50b>>-
cpe:2.3:h:zyxel:emg3525-t50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>emg3525-t50b_firmware>>Versions before 5.50\(absl.0\)b8(exclusive)
cpe:2.3:o:zyxel:emg3525-t50b_firmware:*:*:*:*:america:*:*:*
Zyxel Networks Corporation
zyxel
>>emg3525-t50b>>-
cpe:2.3:h:zyxel:emg3525-t50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>emg5523-t50b_firmware>>Versions before 5.50\(abpm.4\)c0(exclusive)
cpe:2.3:o:zyxel:emg5523-t50b_firmware:*:*:*:*:emea:*:*:*
Zyxel Networks Corporation
zyxel
>>emg5523-t50b>>-
cpe:2.3:h:zyxel:emg5523-t50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>emg5523-t50b_firmware>>Versions before 5.50\(absl.0\)b8(exclusive)
cpe:2.3:o:zyxel:emg5523-t50b_firmware:*:*:*:*:america:*:*:*
Zyxel Networks Corporation
zyxel
>>emg5523-t50b>>-
cpe:2.3:h:zyxel:emg5523-t50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>emg5723-t50k_firmware>>Versions before 5.50\(abom.5\)c0(exclusive)
cpe:2.3:o:zyxel:emg5723-t50k_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>emg5723-t50k>>-
cpe:2.3:h:zyxel:emg5723-t50k:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>emg6726-b10a_firmware>>Versions before 5.13\(abnp.6\).c(exclusive)
cpe:2.3:o:zyxel:emg6726-b10a_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>emg6726-b10a>>-
cpe:2.3:h:zyxel:emg6726-b10a:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>ex3510-b0_firmware>>Versions before 5.17\(abup.3\)c0(exclusive)
cpe:2.3:o:zyxel:ex3510-b0_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>ex3510-b0>>-
cpe:2.3:h:zyxel:ex3510-b0:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>ex5510-b0_firmware>>Versions before 5.15\(abqx.3\)c0(exclusive)
cpe:2.3:o:zyxel:ex5510-b0_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>ex5510-b0>>-
cpe:2.3:h:zyxel:ex5510-b0:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg1312-t20b_firmware>>Versions before 5.50\(absb.3\)c0(exclusive)
cpe:2.3:o:zyxel:vmg1312-t20b_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg1312-t20b>>-
cpe:2.3:h:zyxel:vmg1312-t20b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3625-t50b_firmware>>Versions before 5.50\(abpm.4\)c0(exclusive)
cpe:2.3:o:zyxel:vmg3625-t50b_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3625-t50b>>-
cpe:2.3:h:zyxel:vmg3625-t50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3925-b10b_firmware>>Versions before 5.13\(aavf.16\)c(exclusive)
cpe:2.3:o:zyxel:vmg3925-b10b_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3925-b10b>>-
cpe:2.3:h:zyxel:vmg3925-b10b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3925-b10c_firmware>>Versions before 5.13\(aavf.16\)c(exclusive)
cpe:2.3:o:zyxel:vmg3925-b10c_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3925-b10c>>-
cpe:2.3:h:zyxel:vmg3925-b10c:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-b50a_firmware>>Versions before 5.15\(abmt.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg3927-b50a_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-b50a>>-
cpe:2.3:h:zyxel:vmg3927-b50a:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-b60a_firmware>>Versions before 5.15\(abmt.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg3927-b60a_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-b60a>>-
cpe:2.3:h:zyxel:vmg3927-b60a:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-b50b_firmware>>Versions before 5.13\(ably.6\)c0(exclusive)
cpe:2.3:o:zyxel:vmg3927-b50b_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-b50b>>-
cpe:2.3:h:zyxel:vmg3927-b50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-t50k_firmware>>Versions before 5.50\(abom.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg3927-t50k_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg3927-t50k>>-
cpe:2.3:h:zyxel:vmg3927-t50k:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg4005-b50b_firmware>>Versions before 5.13\(abrl.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg4005-b50b_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg4005-b50b>>-
cpe:2.3:h:zyxel:vmg4005-b50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg4927-b50a_firmware>>Versions before 5.13\(ably.6\)c0(exclusive)
cpe:2.3:o:zyxel:vmg4927-b50a_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg4927-b50a>>-
cpe:2.3:h:zyxel:vmg4927-b50a:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8623-t50b_firmware>>Versions before 5.50\(abpm.4\)c0(exclusive)
cpe:2.3:o:zyxel:vmg8623-t50b_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8623-t50b>>-
cpe:2.3:h:zyxel:vmg8623-t50b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-b50a_firmware>>Versions before 5.15\(abmt.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg8825-b50a_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-b50a>>-
cpe:2.3:h:zyxel:vmg8825-b50a:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-b60a_firmware>>Versions before 5.15\(abmt.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg8825-b60a_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-b60a>>-
cpe:2.3:h:zyxel:vmg8825-b60a:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-bx0b_firmware>>Versions before 5.17\(abny.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg8825-bx0b_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-bx0b>>-
cpe:2.3:h:zyxel:vmg8825-bx0b:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-t50k_firmware>>Versions before 5.50\(abom.5\)c0(exclusive)
cpe:2.3:o:zyxel:vmg8825-t50k_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8825-t50k>>-
cpe:2.3:h:zyxel:vmg8825-t50k:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8924-b10d_firmware>>Versions before 5.13\(abgq.6\)c0(exclusive)
cpe:2.3:o:zyxel:vmg8924-b10d_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>vmg8924-b10d>>-
cpe:2.3:h:zyxel:vmg8924-b10d:-:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>xmg3927-b50a_firmware>>Versions before 5.15\(abmt.5\)c0(exclusive)
cpe:2.3:o:zyxel:xmg3927-b50a_firmware:*:*:*:*:*:*:*:*
Zyxel Networks Corporation
zyxel
>>xmg3927-b50a>>-
cpe:2.3:h:zyxel:xmg3927-b50a:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-120Secondarysecurity@zyxel.com.tw
CWE ID: CWE-120
Type: Secondary
Source: security@zyxel.com.tw
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://www.zyxel.com/service-provider/global/en/zyxel-security-advisory-remote-code-execution-and-denial-service-vulnerabilities-cpesecurity@zyxel.com.tw
Vendor Advisory
Hyperlink: https://www.zyxel.com/service-provider/global/en/zyxel-security-advisory-remote-code-execution-and-denial-service-vulnerabilities-cpe
Source: security@zyxel.com.tw
Resource:
Vendor Advisory
Change History
0Changes found

Details not found