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CVE-2026-33280

CRITICALCVSS 9.8/10EPSS 0.38%

Last modified

CVE-2026-33280 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Hidden functionality issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to gain access to the product’s debugging functionality, resulting in the execution of arbitrary OS commands.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

Hidden functionality issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to gain access to the product’s debugging functionality, resulting in the execution of arbitrary OS commands.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0
8.6/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.0
7.2/10

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

EPSS Probability
0.38%

29.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
BuffaloWcr-1166dhpl Firmware< 1.01
BuffaloWsr3600be4-Kh Firmware< 6.02
BuffaloWsr3600be4p Firmware< 5.02
BuffaloWxr-1750dhp Firmware< 2.63
BuffaloWxr-1750dhp2 Firmware< 2.63
BuffaloWxr18000be10p Firmware< 5.03
BuffaloWxr-1900dhp Firmware< 2.53
BuffaloWxr-1900dhp2 Firmware< 2.62
BuffaloWxr-1900dhp3 Firmware< 2.66
BuffaloWxr-5950ax12 Firmware< 3.57
BuffaloWxr-6000ax12b Firmware< 3.57
BuffaloWxr-6000ax12p Firmware< 3.57
BuffaloWxr-6000ax12s Firmware< 3.57
BuffaloWzr-1166dhp Firmware< 2.20
BuffaloWzr-1166dhp2 Firmware< 2.20
BuffaloWzr-1750dhp Firmware< 2.32
BuffaloWzr-1750dhp2 Firmware< 2.33
BuffaloWzr-S1750dhp Firmware< 2.34
BuffaloWrm-D2133hp Firmware< 3.01
BuffaloWrm-D2133hs Firmware< 3.01
BuffaloWtr-M2133hp Firmware< 3.01
BuffaloWtr-M2133hs Firmware< 3.01
BuffaloWem-1266 Firmware< 2.87
BuffaloWem-1266wp Firmware< 2.87
BuffaloVr-U300w Firmware< 1.42
BuffaloVr-U500x Firmware< 1.42
BuffaloWapm-1266r Firmware< 1.42
BuffaloWapm-1266wdpr Firmware< 1.42
BuffaloWapm-1266wdpra Firmware< 1.42
BuffaloWapm-1750d Firmware< 1.07
BuffaloWapm-2133r Firmware< 1.42
BuffaloWapm-2133tr Firmware< 1.42
BuffaloWapm-Ax4r Firmware< 1.42
BuffaloWapm-Ax8r Firmware< 1.42
BuffaloWapm-Axetr Firmware< 1.42
BuffaloWaps-1266 Firmware< 1.42
BuffaloWaps-Ax4 Firmware< 1.42
BuffaloFs-M1266 Firmware< 4.13
BuffaloFs-S1266 Firmware< 4.13
BuffaloWzr-600dhp FirmwareAll versions
BuffaloWzr-600dhp2 FirmwareAll versions
BuffaloWzr-600dhp3 FirmwareAll versions
BuffaloWzr-900dhp FirmwareAll versions
BuffaloWzr-900dhp2 FirmwareAll versions
BuffaloWzr-S600dhp FirmwareAll versions
BuffaloWzr-S900dhp FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-33280?
Hidden functionality issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to gain access to the product’s debugging functionality, resulting in the execution of arbitrary OS commands.
How severe is CVE-2026-33280?
CVE-2026-33280 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2026-33280?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST