CVE-2026-27650
Received
Received - Intake
OS Command Injection in BUFFALO Wi-Fi Routers Enables Remote Execution
Publication date: 2026-03-27
Last updated on: 2026-03-31
Assigner: JPCERT/CC
Description
Description
OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| buffalo | wcr-1166dhpl_firmware | to 1.01 (exc) |
| buffalo | wsr3600be4-kh_firmware | to 6.02 (exc) |
| buffalo | wsr3600be4p_firmware | to 5.02 (exc) |
| buffalo | wxr-1750dhp_firmware | to 2.63 (exc) |
| buffalo | wxr-1750dhp2_firmware | to 2.63 (exc) |
| buffalo | wxr18000be10p_firmware | to 5.03 (exc) |
| buffalo | wxr-1900dhp_firmware | to 2.53 (exc) |
| buffalo | wxr-1900dhp2_firmware | to 2.62 (exc) |
| buffalo | wxr-1900dhp3_firmware | to 2.66 (exc) |
| buffalo | wxr-5950ax12_firmware | to 3.57 (exc) |
| buffalo | wxr-6000ax12b_firmware | to 3.57 (exc) |
| buffalo | wxr-6000ax12p_firmware | to 3.57 (exc) |
| buffalo | wxr-6000ax12s_firmware | to 3.57 (exc) |
| buffalo | wzr-1166dhp_firmware | to 2.20 (exc) |
| buffalo | wzr-1166dhp2_firmware | to 2.20 (exc) |
| buffalo | wzr-1750dhp_firmware | to 2.32 (exc) |
| buffalo | wzr-1750dhp2_firmware | to 2.33 (exc) |
| buffalo | wzr-s1750dhp_firmware | to 2.34 (exc) |
| buffalo | wrm-d2133hp_firmware | to 3.01 (exc) |
| buffalo | wrm-d2133hs_firmware | to 3.01 (exc) |
| buffalo | wtr-m2133hp_firmware | to 3.01 (exc) |
| buffalo | wtr-m2133hs_firmware | to 3.01 (exc) |
| buffalo | wem-1266_firmware | to 2.87 (exc) |
| buffalo | wem-1266wp_firmware | to 2.87 (exc) |
| buffalo | vr-u300w_firmware | to 1.42 (exc) |
| buffalo | vr-u500x_firmware | to 1.42 (exc) |
| buffalo | wapm-1266r_firmware | to 1.42 (exc) |
| buffalo | wapm-1266wdpr_firmware | to 1.42 (exc) |
| buffalo | wapm-1266wdpra_firmware | to 1.42 (exc) |
| buffalo | wapm-1750d_firmware | to 1.07 (exc) |
| buffalo | wapm-2133r_firmware | to 1.42 (exc) |
| buffalo | wapm-2133tr_firmware | to 1.42 (exc) |
| buffalo | wapm-ax4r_firmware | to 1.42 (exc) |
| buffalo | wapm-ax8r_firmware | to 1.42 (exc) |
| buffalo | wapm-axetr_firmware | to 1.42 (exc) |
| buffalo | waps-1266_firmware | to 1.42 (exc) |
| buffalo | waps-ax4_firmware | to 1.42 (exc) |
| buffalo | fs-m1266_firmware | to 4.13 (exc) |
| buffalo | fs-s1266_firmware | to 4.13 (exc) |
| buffalo | wzr-600dhp_firmware | * |
| buffalo | wzr-600dhp2_firmware | * |
| buffalo | wzr-600dhp3_firmware | * |
| buffalo | wzr-900dhp_firmware | * |
| buffalo | wzr-900dhp2_firmware | * |
| buffalo | wzr-s600dhp_firmware | * |
| buffalo | wzr-s900dhp_firmware | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-78 | The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an OS Command Injection issue found in BUFFALO Wi-Fi router products. It allows an attacker to execute arbitrary operating system commands on the affected devices.
How can this vulnerability impact me? :
If exploited, this vulnerability can allow an attacker to run any OS command on the affected router, potentially leading to unauthorized control over the device, disruption of network services, data theft, or further attacks on connected systems.
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