CVE-2026-6058: CWE-116 Improper Encoding or Escaping of Output in Zyxel WRE6505 v2 firmware
CVE-2026-6058 is a medium severity vulnerability affecting Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0. It involves improper encoding or escaping in the CGI program of the device's web management interface. An adjacent attacker on the WLAN can exploit this by causing an authenticated administrator to visit the “AP Select” page with a malformed SSID, resulting in a denial-of-service (DoS) condition. There is no impact on confidentiality or integrity. No patch or official remediation has been announced by Zyxel as of the publication date.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-6058) in Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 is due to improper encoding or escaping of output in the CGI program of the device's web management interface. An attacker adjacent on the WLAN can trigger a denial-of-service condition by causing an authenticated administrator to load the “AP Select” page when a malformed SSID is present. The vulnerability does not affect confidentiality or integrity, only availability. No official fix or remediation level has been provided by Zyxel at the time of publication.
Potential Impact
The vulnerability allows an adjacent attacker on the WLAN to cause a denial-of-service condition on the device's web management interface by exploiting improper output encoding when a malformed SSID is present. There is no confidentiality or integrity impact. The DoS affects availability of the management interface for the administrator.
Mitigation Recommendations
No official patch or remediation has been announced by Zyxel as of the publication date. Users should monitor Zyxel advisories for updates. Until a fix is available, restricting WLAN access to trusted users and avoiding visiting the “AP Select” page when suspicious SSIDs are present may reduce exposure.
CVE-2026-6058: CWE-116 Improper Encoding or Escaping of Output in Zyxel WRE6505 v2 firmware
Description
CVE-2026-6058 is a medium severity vulnerability affecting Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0. It involves improper encoding or escaping in the CGI program of the device's web management interface. An adjacent attacker on the WLAN can exploit this by causing an authenticated administrator to visit the “AP Select” page with a malformed SSID, resulting in a denial-of-service (DoS) condition. There is no impact on confidentiality or integrity. No patch or official remediation has been announced by Zyxel as of the publication date.
CVSS v3.1
Score 4.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-6058) in Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 is due to improper encoding or escaping of output in the CGI program of the device's web management interface. An attacker adjacent on the WLAN can trigger a denial-of-service condition by causing an authenticated administrator to load the “AP Select” page when a malformed SSID is present. The vulnerability does not affect confidentiality or integrity, only availability. No official fix or remediation level has been provided by Zyxel at the time of publication.
Potential Impact
The vulnerability allows an adjacent attacker on the WLAN to cause a denial-of-service condition on the device's web management interface by exploiting improper output encoding when a malformed SSID is present. There is no confidentiality or integrity impact. The DoS affects availability of the management interface for the administrator.
Mitigation Recommendations
No official patch or remediation has been announced by Zyxel as of the publication date. Users should monitor Zyxel advisories for updates. Until a fix is available, restricting WLAN access to trusted users and avoiding visiting the “AP Select” page when suspicious SSIDs are present may reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Zyxel
- Date Reserved
- 2026-04-10T01:11:47.075Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e6d6dd19fe3cd2cd64f73f
Added to database: 04/21/2026, 01:46:05 UTC
Last enriched: 07/08/2026, 13:35:07 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 120
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