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Fencer Intel
medium 5.3

CVE-2026-33366 json

Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the pr…

published 7mo ago modified 14d ago also EUVD-2026-16551

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

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

Patch / fix

  • buffalo wcr-1166dhpl_firmware 1.01
  • buffalo wsr3600be4-kh_firmware 6.02
  • buffalo wsr3600be4p_firmware 5.02
  • buffalo wxr-1750dhp_firmware 2.63
  • buffalo wxr-1750dhp2_firmware 2.63
  • buffalo wxr18000be10p_firmware 5.03
  • buffalo wxr-1900dhp_firmware 2.53
  • buffalo wxr-1900dhp2_firmware 2.62
  • buffalo wxr-1900dhp3_firmware 2.66
  • buffalo wxr-5950ax12_firmware 3.57
  • buffalo wxr-6000ax12b_firmware 3.57
  • buffalo wxr-6000ax12p_firmware 3.57
  • buffalo wxr-6000ax12s_firmware 3.57
  • buffalo wzr-1166dhp_firmware 2.20
  • buffalo wzr-1166dhp2_firmware 2.20
  • buffalo wzr-1750dhp_firmware 2.32
  • buffalo wzr-1750dhp2_firmware 2.33
  • buffalo wzr-s1750dhp_firmware 2.34
  • buffalo wrm-d2133hp_firmware 3.01
  • buffalo wrm-d2133hs_firmware 3.01

Is CVE-2026-33366 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
7mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 4.0 6.9 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
CNA 4.0 6.9 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

Affected products

  • BUFFALO INC. BUFFALO Wi-Fi router products

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.