CVE-2026-86530: Improper neutralization of special elements used in an OS command ('OS Command Injection') in BUFFALO INC. WSR-300HP
BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally. An administrative user may send a crafted HTTP request and execute an arbitrary OS command.
AI Analysis
Technical Summary
BUFFALO INC. WSR-300HP devices improperly neutralize special elements in web form inputs that are used internally to build OS command line strings. An authenticated administrative user can exploit this flaw by sending a specially crafted HTTP request, resulting in arbitrary OS command execution on the device.
Potential Impact
Successful exploitation allows an administrative user to execute arbitrary operating system commands on the affected device, potentially leading to full compromise of the device's functionality and confidentiality, integrity, and availability impacts.
Mitigation Recommendations
No patch or official remediation information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict administrative access to trusted users and networks to reduce risk.
CVE-2026-86530: Improper neutralization of special elements used in an OS command ('OS Command Injection') in BUFFALO INC. WSR-300HP
Description
BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally. An administrative user may send a crafted HTTP request and execute an arbitrary OS command.
CVSS v3.1
Score 7.2high
Affected software
BUFFALO INC.
WSR-300HP
BUFFALO INC.
WEX-G300
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
BUFFALO INC. WSR-300HP devices improperly neutralize special elements in web form inputs that are used internally to build OS command line strings. An authenticated administrative user can exploit this flaw by sending a specially crafted HTTP request, resulting in arbitrary OS command execution on the device.
Potential Impact
Successful exploitation allows an administrative user to execute arbitrary operating system commands on the affected device, potentially leading to full compromise of the device's functionality and confidentiality, integrity, and availability impacts.
Mitigation Recommendations
No patch or official remediation information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict administrative access to trusted users and networks to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jpcert
- Date Reserved
- 2026-09-24T08:54:17.872Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aba29d2f7a7c541066c99bb
Added to database: 09/28/2026, 08:48:18 UTC
Last enriched: 09/28/2026, 09:03:17 UTC
Last updated: 09/29/2026, 02:52:44 UTC
Views: 17
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