How severe is CVE-2026-8227?

CVE-2026-8227 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-8227 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8227?

CVE-2026-8227 affects Wavlink Wl-nu516u1 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8227?

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

Does CVE-2026-8227 have an EU (EUVD) identifier?

Yes. CVE-2026-8227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28975.

When was CVE-2026-8227 published?

CVE-2026-8227 was published on 2026-05-10 and last updated on 2026-06-17.

CVE-2026-8227

CVE-2026-8227 is a medium-severity vulnerability in Wavlink Wl-nu516u1 Firmware with a CVSS 3.x base score of 6.3. 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28975
Weakness: CWE-77
Affected product: Wavlink Wl-nu516u1 Firmware
Published: 2026-05-10
Last modified: 2026-06-17

Description

A weakness has been identified in Wavlink NU516U1 240425. This issue affects the function wzdapMesh of the file /cgi-bin/adm.cgi. This manipulation causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

Frequently asked questions

What is CVE-2026-8227?: A weakness has been identified in Wavlink NU516U1 240425. This issue affects the function wzdapMesh of the file /cgi-bin/adm.cgi. This manipulation causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
How severe is CVE-2026-8227?: CVE-2026-8227 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-8227 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8227?: CVE-2026-8227 affects Wavlink Wl-nu516u1 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8227?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8227 have an EU (EUVD) identifier?: Yes. CVE-2026-8227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28975.
When was CVE-2026-8227 published?: CVE-2026-8227 was published on 2026-05-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:wavlink:wl-nu516u1_firmware:m16u1_v240425:*:*:*:*:*:*:*

More vulnerabilities in Wavlink Wl-nu516u1 Firmware

CVE-2026-3703 — Critical (CVSS 9.8): A flaw has been found in Wavlink NU516U1 251208. This affects the function sub_401A10 of the file /cgi-bin/login.cgi.…
CVE-2026-4861 — High (CVSS 8.8): A weakness has been identified in Wavlink WL-NU516U1 260227. This vulnerability affects the function ftext of the file…
CVE-2026-3613 — High (CVSS 7.2): A vulnerability was identified in Wavlink WL-NU516U1 V240425. This vulnerability affects the function sub_401A0C of the…
CVE-2026-3612 — High (CVSS 7.2): A vulnerability was determined in Wavlink WL-NU516U1 V240425. This affects the function sub_405AF4 of the file…
CVE-2026-2615 — High (CVSS 7.2): A flaw has been found in Wavlink WL-NU516U1 up to 20251208. The affected element is the function…
CVE-2026-2567 — High (CVSS 7.2): A vulnerability was detected in Wavlink WL-NU516U1 20251208. This vulnerability affects the function sub_401218 of the…

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