CVE-2026-7255

MEDIUMNVD 6.56.5—

6.5

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
EG Score: 6.5(high)
EPSS: 6.9%
KEV: Not listed

Published

May 12, 2026

Last Modified

May 13, 2026

Advisory Details (1)

Auto-updated May 12, 2026

No patch confirmed yet.

generic

End of life | Zyxel Networks

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-307Improper Restriction of Excessive Authentication Attempts

Data Freshness Timeline

(refreshed 10× in last 7d / 15× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 13:03 UTCEG score recompute
2026-05-20 13:03 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-7255?

CVE-2026-7255 is a medium vulnerability published on May 12, 2026. 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.

When was CVE-2026-7255 disclosed?

CVE-2026-7255 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-7255 actively exploited?

CVE-2026-7255 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-7255?

CVE-2026-7255 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2026-7255?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7255, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-7255

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

End of life | Zyxel Networks

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-7255?

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Advisory Details (1)

Frequently asked(5)

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