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.

Published: 2026-03-27 Last update: 2026-03-31 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-33280 is rated Moderate Risk (42.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.07%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-33280

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-27 — 0.07% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-33280

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.6 4.0 HIGH
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 Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:H)
High privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:H)
High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:H)
High integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H)
High availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.2 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 5.9 [email protected]

Weakness enumeration for CVE-2026-33280

Affected software / configurations for CVE-2026-33280

Vendor Product Version Raw CPE
buffalo wcr-1166dhpl_firmware < 1.01 cpe:2.3:o:buffalo:wcr-1166dhpl_firmware:*:*:*:*:*:*:*:*
buffalo wsr3600be4-kh_firmware < 6.02 cpe:2.3:o:buffalo:wsr3600be4-kh_firmware:*:*:*:*:*:*:*:*
buffalo wsr3600be4p_firmware < 5.02 cpe:2.3:o:buffalo:wsr3600be4p_firmware:*:*:*:*:*:*:*:*
buffalo wxr-1750dhp_firmware < 2.63 cpe:2.3:o:buffalo:wxr-1750dhp_firmware:*:*:*:*:*:*:*:*
buffalo wxr-1750dhp2_firmware < 2.63 cpe:2.3:o:buffalo:wxr-1750dhp2_firmware:*:*:*:*:*:*:*:*
buffalo wxr18000be10p_firmware < 5.03 cpe:2.3:o:buffalo:wxr18000be10p_firmware:*:*:*:*:*:*:*:*
buffalo wxr-1900dhp_firmware < 2.53 cpe:2.3:o:buffalo:wxr-1900dhp_firmware:*:*:*:*:*:*:*:*
buffalo wxr-1900dhp2_firmware < 2.62 cpe:2.3:o:buffalo:wxr-1900dhp2_firmware:*:*:*:*:*:*:*:*
buffalo wxr-1900dhp3_firmware < 2.66 cpe:2.3:o:buffalo:wxr-1900dhp3_firmware:*:*:*:*:*:*:*:*
buffalo wxr-5950ax12_firmware < 3.57 cpe:2.3:o:buffalo:wxr-5950ax12_firmware:*:*:*:*:*:*:*:*
buffalo wxr-6000ax12b_firmware < 3.57 cpe:2.3:o:buffalo:wxr-6000ax12b_firmware:*:*:*:*:*:*:*:*
buffalo wxr-6000ax12p_firmware < 3.57 cpe:2.3:o:buffalo:wxr-6000ax12p_firmware:*:*:*:*:*:*:*:*
buffalo wxr-6000ax12s_firmware < 3.57 cpe:2.3:o:buffalo:wxr-6000ax12s_firmware:*:*:*:*:*:*:*:*
buffalo wzr-1166dhp_firmware < 2.20 cpe:2.3:o:buffalo:wzr-1166dhp_firmware:*:*:*:*:*:*:*:*
buffalo wzr-1166dhp2_firmware < 2.20 cpe:2.3:o:buffalo:wzr-1166dhp2_firmware:*:*:*:*:*:*:*:*
buffalo wzr-1750dhp_firmware < 2.32 cpe:2.3:o:buffalo:wzr-1750dhp_firmware:*:*:*:*:*:*:*:*
buffalo wzr-1750dhp2_firmware < 2.33 cpe:2.3:o:buffalo:wzr-1750dhp2_firmware:*:*:*:*:*:*:*:*
buffalo wzr-s1750dhp_firmware < 2.34 cpe:2.3:o:buffalo:wzr-s1750dhp_firmware:*:*:*:*:*:*:*:*
buffalo wrm-d2133hp_firmware < 3.01 cpe:2.3:o:buffalo:wrm-d2133hp_firmware:*:*:*:*:*:*:*:*
buffalo wrm-d2133hs_firmware < 3.01 cpe:2.3:o:buffalo:wrm-d2133hs_firmware:*:*:*:*:*:*:*:*
buffalo wtr-m2133hp_firmware < 3.01 cpe:2.3:o:buffalo:wtr-m2133hp_firmware:*:*:*:*:*:*:*:*
buffalo wtr-m2133hs_firmware < 3.01 cpe:2.3:o:buffalo:wtr-m2133hs_firmware:*:*:*:*:*:*:*:*
buffalo wem-1266_firmware < 2.87 cpe:2.3:o:buffalo:wem-1266_firmware:*:*:*:*:*:*:*:*
buffalo wem-1266wp_firmware < 2.87 cpe:2.3:o:buffalo:wem-1266wp_firmware:*:*:*:*:*:*:*:*
buffalo vr-u300w_firmware < 1.42 cpe:2.3:o:buffalo:vr-u300w_firmware:*:*:*:*:*:*:*:*
buffalo vr-u500x_firmware < 1.42 cpe:2.3:o:buffalo:vr-u500x_firmware:*:*:*:*:*:*:*:*
buffalo wapm-1266r_firmware < 1.42 cpe:2.3:o:buffalo:wapm-1266r_firmware:*:*:*:*:*:*:*:*
buffalo wapm-1266wdpr_firmware < 1.42 cpe:2.3:o:buffalo:wapm-1266wdpr_firmware:*:*:*:*:*:*:*:*
buffalo wapm-1266wdpra_firmware < 1.42 cpe:2.3:o:buffalo:wapm-1266wdpra_firmware:*:*:*:*:*:*:*:*
buffalo wapm-1750d_firmware < 1.07 cpe:2.3:o:buffalo:wapm-1750d_firmware:*:*:*:*:*:*:*:*
buffalo wapm-2133r_firmware < 1.42 cpe:2.3:o:buffalo:wapm-2133r_firmware:*:*:*:*:*:*:*:*
buffalo wapm-2133tr_firmware < 1.42 cpe:2.3:o:buffalo:wapm-2133tr_firmware:*:*:*:*:*:*:*:*
buffalo wapm-ax4r_firmware < 1.42 cpe:2.3:o:buffalo:wapm-ax4r_firmware:*:*:*:*:*:*:*:*
buffalo wapm-ax8r_firmware < 1.42 cpe:2.3:o:buffalo:wapm-ax8r_firmware:*:*:*:*:*:*:*:*
buffalo wapm-axetr_firmware < 1.42 cpe:2.3:o:buffalo:wapm-axetr_firmware:*:*:*:*:*:*:*:*
buffalo waps-1266_firmware < 1.42 cpe:2.3:o:buffalo:waps-1266_firmware:*:*:*:*:*:*:*:*
buffalo waps-ax4_firmware < 1.42 cpe:2.3:o:buffalo:waps-ax4_firmware:*:*:*:*:*:*:*:*
buffalo fs-m1266_firmware < 4.13 cpe:2.3:o:buffalo:fs-m1266_firmware:*:*:*:*:*:*:*:*
buffalo fs-s1266_firmware < 4.13 cpe:2.3:o:buffalo:fs-s1266_firmware:*:*:*:*:*:*:*:*
buffalo wzr-600dhp_firmware — cpe:2.3:o:buffalo:wzr-600dhp_firmware:-:*:*:*:*:*:*:*
buffalo wzr-600dhp2_firmware — cpe:2.3:o:buffalo:wzr-600dhp2_firmware:-:*:*:*:*:*:*:*
buffalo wzr-600dhp3_firmware — cpe:2.3:o:buffalo:wzr-600dhp3_firmware:-:*:*:*:*:*:*:*
buffalo wzr-900dhp_firmware — cpe:2.3:o:buffalo:wzr-900dhp_firmware:-:*:*:*:*:*:*:*
buffalo wzr-900dhp2_firmware — cpe:2.3:o:buffalo:wzr-900dhp2_firmware:-:*:*:*:*:*:*:*
buffalo wzr-s600dhp_firmware — cpe:2.3:o:buffalo:wzr-s600dhp_firmware:-:*:*:*:*:*:*:*
buffalo wzr-s900dhp_firmware — cpe:2.3:o:buffalo:wzr-s900dhp_firmware:-:*:*:*:*:*:*:*

References for CVE-2026-33280

cvelogic Threat Intelligence