CVE & CISA-KEV Catalog

CVE-2026-33366

MEDIUM

5.3

CVSS v3

Description

Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.

CWE-306Missing Authentication for Critical Function

How to fix

Remediation Available

fs-m1266 firmwareNVD

Affected:< 4.13Fixed in:4.13CVE-2026-33366derived from NVD

fs-s1266 firmwareNVD

Affected:< 4.13Fixed in:4.13CVE-2026-33366derived from NVD

vr-u300w firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

vr-u500x firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-1266r firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-1266wdpr firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-1266wdpra firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-1750d firmwareNVD

Affected:< 1.07Fixed in:1.07CVE-2026-33366derived from NVD

wapm-2133r firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-2133tr firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-ax4r firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-ax8r firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wapm-axetr firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

waps-1266 firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

waps-ax4 firmwareNVD

Affected:< 1.42Fixed in:1.42CVE-2026-33366derived from NVD

wcr-1166dhpl firmwareNVD

Affected:< 1.01Fixed in:1.01CVE-2026-33366derived from NVD

wem-1266 firmwareNVD

Affected:< 2.87Fixed in:2.87CVE-2026-33366derived from NVD

wem-1266wp firmwareNVD

Affected:< 2.87Fixed in:2.87CVE-2026-33366derived from NVD

wrm-d2133hp firmwareNVD

Affected:< 3.01Fixed in:3.01CVE-2026-33366derived from NVD

wrm-d2133hs firmwareNVD

Affected:< 3.01Fixed in:3.01CVE-2026-33366derived from NVD

wsr3600be4-kh firmwareNVD

Affected:< 6.02Fixed in:6.02CVE-2026-33366derived from NVD

wsr3600be4p firmwareNVD

Affected:< 5.02Fixed in:5.02CVE-2026-33366derived from NVD

wtr-m2133hp firmwareNVD

Affected:< 3.01Fixed in:3.01CVE-2026-33366derived from NVD

wtr-m2133hs firmwareNVD

Affected:< 3.01Fixed in:3.01CVE-2026-33366derived from NVD

wxr-1750dhp2 firmwareNVD

Affected:< 2.63Fixed in:2.63CVE-2026-33366derived from NVD

wxr-1750dhp firmwareNVD

Affected:< 2.63Fixed in:2.63CVE-2026-33366derived from NVD

wxr-1900dhp2 firmwareNVD

Affected:< 2.62Fixed in:2.62CVE-2026-33366derived from NVD

wxr-1900dhp3 firmwareNVD

Affected:< 2.66Fixed in:2.66CVE-2026-33366derived from NVD

wxr-1900dhp firmwareNVD

Affected:< 2.53Fixed in:2.53CVE-2026-33366derived from NVD

wxr-5950ax12 firmwareNVD

Affected:< 3.57Fixed in:3.57CVE-2026-33366derived from NVD

wxr-6000ax12b firmwareNVD

Affected:< 3.57Fixed in:3.57CVE-2026-33366derived from NVD

wxr-6000ax12p firmwareNVD

Affected:< 3.57Fixed in:3.57CVE-2026-33366derived from NVD

wxr-6000ax12s firmwareNVD

Affected:< 3.57Fixed in:3.57CVE-2026-33366derived from NVD

wxr18000be10p firmwareNVD

Affected:< 5.03Fixed in:5.03CVE-2026-33366derived from NVD

wzr-1166dhp2 firmwareNVD

Affected:< 2.20Fixed in:2.20CVE-2026-33366derived from NVD

wzr-1166dhp firmwareNVD

Affected:< 2.20Fixed in:2.20CVE-2026-33366derived from NVD

wzr-1750dhp2 firmwareNVD

Affected:< 2.33Fixed in:2.33CVE-2026-33366derived from NVD

wzr-1750dhp firmwareNVD

Affected:< 2.32Fixed in:2.32CVE-2026-33366derived from NVD

wzr-s1750dhp firmwareNVD

Affected:< 2.34Fixed in:2.34CVE-2026-33366derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.34%probability of exploitation in 30 days

26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Vendor Advisory1

buffalo.jp

Third-Party Advisory1

jvn.jp

Related Vulnerabilities

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-10271	High	7.5	100%	KEV + Ransom	-
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2022-1388	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2021-37415	Critical	9.8	100%	KEV	-
CVE-2023-21839	High	7.5	100%	KEV	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-31.