How severe is CVE-2026-7255?

CVE-2026-7255 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-7255 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7255?

CVE-2026-7255 affects Zyxel Wre6505 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-7255?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-7255 have an EU (EUVD) identifier?

Yes. CVE-2026-7255 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29375.

When was CVE-2026-7255 published?

CVE-2026-7255 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-7255

CVE-2026-7255 is a medium-severity vulnerability in Zyxel Wre6505 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29375
Weakness: CWE-307
Affected product: Zyxel Wre6505 Firmware
Published: 2026-05-12
Last modified: 2026-06-17

Description

** 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.

Frequently asked questions

What is 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.
How severe is CVE-2026-7255?: CVE-2026-7255 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-7255 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7255?: CVE-2026-7255 affects Zyxel Wre6505 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-7255?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-7255 have an EU (EUVD) identifier?: Yes. CVE-2026-7255 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29375.
When was CVE-2026-7255 published?: CVE-2026-7255 was published on 2026-05-12 and last updated on 2026-06-17.

References

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

Affected products (1)

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

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