CVE-2026-33366
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may...
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.
- Record
CVE-2026-33366- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-306
- Updated
- 2026-11-02
EUVDEUVD-2026-16551
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.
- Record
EUVD-2026-16551- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h3gg-7vcj-v4m8
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may...
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.
- Record
GHSA-h3gg-7vcj-v4m8- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-306
- Updated
- 2026-11-02
NVD
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.
- Record
CVE-2026-33366- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-306
- Updated
- 2026-11-02
Affected products
- buffalo inc. wi-fi router products
- buffalo fs-m1266 firmware
- buffalo fs-s1266 firmware
- buffalo vr-u300w firmware
- buffalo vr-u500x firmware
- buffalo wapm-1266r firmware
- buffalo wapm-1266wdpr firmware
- buffalo wapm-1266wdpra firmware
- buffalo wapm-1750d firmware
- buffalo wapm-2133r firmware
- buffalo wapm-2133tr firmware
- buffalo wapm-ax4r firmware
Show 35 moreShow less
- buffalo wapm-ax8r firmware
- buffalo wapm-axetr firmware
- buffalo waps-1266 firmware
- buffalo waps-ax4 firmware
- buffalo wcr-1166dhpl firmware
- buffalo wem-1266 firmware
- buffalo wem-1266wp firmware
- buffalo wrm-d2133hp firmware
- buffalo wrm-d2133hs firmware
- buffalo wsr3600be4-kh firmware
- buffalo wsr3600be4p firmware
- buffalo wtr-m2133hp firmware
- buffalo wtr-m2133hs firmware
- buffalo wxr-1750dhp2 firmware
- buffalo wxr-1750dhp firmware
- buffalo wxr-1900dhp2 firmware
- buffalo wxr-1900dhp3 firmware
- buffalo wxr-1900dhp firmware
- buffalo wxr-5950ax12 firmware
- buffalo wxr-6000ax12b firmware
- buffalo wxr-6000ax12p firmware
- buffalo wxr-6000ax12s firmware
- buffalo wxr18000be10p firmware
- buffalo wzr-1166dhp2 firmware
- buffalo wzr-1166dhp firmware
- buffalo wzr-1750dhp2 firmware
- buffalo wzr-1750dhp firmware
- buffalo wzr-600dhp2 firmware
- buffalo wzr-600dhp3 firmware
- buffalo wzr-600dhp firmware
- buffalo wzr-900dhp2 firmware
- buffalo wzr-900dhp firmware
- buffalo wzr-s1750dhp firmware
- buffalo wzr-s600dhp firmware
- buffalo wzr-s900dhp firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-33366 is a medium vulnerability (CVSS 6.9) in Buffalo Inc. Wi-fi Router Products, published March 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile. No source names a fixed version.