CVE-2026-0711: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in Zyxel DX3300-T0 firmware
CVE-2026-0711 is a post-authentication OS command injection vulnerability in the EasyMesh-related APIs of Zyxel DX3300-T0 firmware versions up to 5.50(ABVY.7.1)C0. An attacker with administrator privileges and adjacent network access could exploit this flaw to execute arbitrary OS commands on the affected device. The vulnerability has a CVSS score of 6.8, indicating a medium severity level. There is no official patch or remediation guidance currently available from Zyxel. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-0711) involves improper neutralization of special elements used in OS commands (CWE-78) within the EasyMesh-related APIs of Zyxel DX3300-T0 firmware versions up to 5.50(ABVY.7.1)C0. It allows an authenticated attacker with administrator privileges and adjacent network access to inject and execute arbitrary OS commands on the device. The flaw requires no user interaction and affects confidentiality, integrity, and availability of the device. The CVSS 3.1 vector is AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, reflecting the need for high privileges but low attack complexity.
Potential Impact
Successful exploitation could lead to full compromise of the affected device, allowing an attacker to execute arbitrary OS commands with administrator privileges. This impacts the confidentiality, integrity, and availability of the device and potentially the network it operates within. However, exploitation requires authenticated administrator access and adjacency, limiting the attack surface. No known active exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is currently documented by Zyxel, administrators should restrict administrative access to trusted personnel and networks only. Monitor Zyxel's official channels for updates regarding patches or mitigations.
CVE-2026-0711: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in Zyxel DX3300-T0 firmware
Description
CVE-2026-0711 is a post-authentication OS command injection vulnerability in the EasyMesh-related APIs of Zyxel DX3300-T0 firmware versions up to 5.50(ABVY.7.1)C0. An attacker with administrator privileges and adjacent network access could exploit this flaw to execute arbitrary OS commands on the affected device. The vulnerability has a CVSS score of 6.8, indicating a medium severity level. There is no official patch or remediation guidance currently available from Zyxel. No known exploits are reported in the wild at this time.
CVSS v3.1
Score 6.8medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-0711) involves improper neutralization of special elements used in OS commands (CWE-78) within the EasyMesh-related APIs of Zyxel DX3300-T0 firmware versions up to 5.50(ABVY.7.1)C0. It allows an authenticated attacker with administrator privileges and adjacent network access to inject and execute arbitrary OS commands on the device. The flaw requires no user interaction and affects confidentiality, integrity, and availability of the device. The CVSS 3.1 vector is AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, reflecting the need for high privileges but low attack complexity.
Potential Impact
Successful exploitation could lead to full compromise of the affected device, allowing an attacker to execute arbitrary OS commands with administrator privileges. This impacts the confidentiality, integrity, and availability of the device and potentially the network it operates within. However, exploitation requires authenticated administrator access and adjacency, limiting the attack surface. No known active exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is currently documented by Zyxel, administrators should restrict administrative access to trusted personnel and networks only. Monitor Zyxel's official channels for updates regarding patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Zyxel
- Date Reserved
- 2026-01-08T08:42:15.633Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f020adcbff5d861065202f
Added to database: 4/28/2026, 2:51:25 AM
Last enriched: 5/6/2026, 2:34:08 AM
Last updated: 6/12/2026, 12:19:40 PM
Views: 81
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