CVE-2026-7255

** UNSUPPORTED WHEN ASSIGNED ** An improper restriction of excessive authentication attempts vulnerability in the web management interface of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to brute-force the password and bypass authentication.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.zyxel.com/global/en/support/end-of-life	Product

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:zyxel:wre6505_firmware:v1.00\(abdv.3\)c0:*:*:*:*:*:*:*

cpe:2.3:h:zyxel:wre6505:v2:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-12 04:16

Updated : 2026-06-17 11:02

NVD link : CVE-2026-7255

Mitre link : CVE-2026-7255

CVE.ORG link : CVE-2026-7255

JSON object : View

Products Affected

zyxel

wre6505
wre6505_firmware

CWE

CWE-307

Improper Restriction of Excessive Authentication Attempts

{"id": "CVE-2026-7255", "cveTags": [{"tags": ["unsupported-when-assigned"], "sourceIdentifier": "security@zyxel.com.tw"}], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-7255", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-12T12:50:07.868941Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@zyxel.com.tw", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@zyxel.com.tw", "affectedData": [{"vendor": "Zyxel", "product": "WRE6505 v2 firmware", "versions": [{"status": "affected", "version": "V1.00(ABDV.3)C0"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-12T04:16:29.143", "references": [{"url": "https://www.zyxel.com/global/en/support/end-of-life", "tags": ["Product"], "source": "security@zyxel.com.tw"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@zyxel.com.tw", "description": [{"lang": "en", "value": "CWE-307"}]}], "descriptions": [{"lang": "en", "value": "** UNSUPPORTED WHEN ASSIGNED ** An improper restriction of excessive authentication attempts vulnerability in the web management interface of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to brute-force the password and bypass authentication."}], "lastModified": "2026-06-17T11:02:05.557", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:wre6505_firmware:v1.00\\(abdv.3\\)c0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6CCCBD5B-877B-4050-83AB-33E29C86A399"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:wre6505:v2:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "80D82EE7-F4EF-46FA-9D1D-C7EC6159E74E"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@zyxel.com.tw"}