VulnerabilityPublished 13 May 2026

CVE-2026-42950: ELECOM WAB-BE187-M · Unchecked Error Condition

Affects ELECOM WAB-BE187-MSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.0 base score

4.3Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 13 May 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 29 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
ELECOM CO.,LTD.WAB-BE187-M	Affected =v1.1.10 and earlier	Fixed in–
ELECOM CO.,LTD.WAB-BE72-M	Affected =v1.1.3 and earlier	Fixed in–
ELECOM CO.,LTD.WAB-BE36-M	Affected =v1.1.3 and earlier	Fixed in–
ELECOM CO.,LTD.WAB-BE36-S	Affected =v1.1.3 and earlier	Fixed in–

AI-suggested

Until an official fix is available, users should avoid viewing untrusted or malicious web pages while logged into the device's admin interface to prevent disruption. Monitor vendor communications for updates on patches or mitigations.

Description

ELECOM wireless LAN access point devices do not check if language parameter has an appropriate value. If a user views a malicious page while logged in, the admin page on the user's web browser may become broken.

Impact

The vulnerability can cause the admin page on the user's web browser to become broken or unusable, impacting availability of the management interface. There is no impact on confidentiality or integrity. No known exploits have been reported in the wild.

Summary

The vulnerability in ELECOM WAB-BE187-M devices arises from improper validation of the language parameter. This flaw allows a maliciously crafted page, when viewed by a logged-in user, to disrupt the admin page's display or functionality in the user's web browser. The issue affects firmware versions v1.1.10 and earlier. The CVSS 3.0 vector indicates the attack requires network access, low attack complexity, no privileges, and user interaction, with impact limited to availability (admin page disruption).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 13 May 2026, 12:52 UTC

Technical details

References

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