VulnerabilityPublished 27 Mar 2026

CVE-2026-32678: BUFFALO Wi-Fi router products · Authentication Bypass Using an Alternate Path or Channel

Affects BUFFALO Wi-Fi router productsSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.0 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
BUFFALO INC.BUFFALO Wi-Fi router products	Affected =See "References" section	Fixed in–

AI-suggested

Until an official fix is available, users should monitor BUFFALO INC. communications for updates. No vendor advisory or patch links are provided in the current data, so no specific mitigation steps can be recommended beyond awaiting official guidance.

Description

CVE-2026-32678 is an authentication bypass vulnerability in BUFFALO Wi-Fi router products. This flaw allows an attacker to alter critical configuration settings without needing to authenticate. The vulnerability has a high severity rating with a CVSS score of 7.5. No known exploits are reported in the wild, and no patch or official remediation information is provided in the available data. The issue affects certain versions of BUFFALO Wi-Fi routers as referenced in external sources. Due to the lack of vendor advisory or patch information, the current remediation status is unclear.

Impact

An attacker exploiting this vulnerability can alter critical configuration settings on affected BUFFALO Wi-Fi routers without authentication. This could lead to unauthorized changes that may compromise the router's operation or security posture. There is no indication of confidentiality or availability impact. No known exploits are currently reported in the wild.

Summary

This vulnerability (CVE-2026-32678) affects BUFFALO Wi-Fi router products and enables an attacker to bypass authentication mechanisms by using an alternate path or channel. This bypass allows unauthorized modification of critical router configuration settings. The CVSS 3.0 score of 7.5 indicates a high-severity issue with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact is limited to integrity compromise without affecting confidentiality or availability.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 13:31 UTC

Technical details

References

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