CVE-2026-44387

Arbitrary script execution in logged-in browsers

Published Jul 28, 2026 · Updated Jul 28, 2026

Reflected cross-site scripting in five ELECOM WAB access points allows attackers to execute arbitrary scripts in a logged-in user's browser. Published advisories identify only the WebUI configuration interface and do not disclose which request parameter is reflected or where output encoding fails. WAB-I1750-PS, WAB-M2133, and WAB-S1167-PS 2.0.5 and earlier are affected, as are WAB-M1775-PS and WAB-S1775 2.1.9 and earlier; exploitation requires adjacent-network access and passive interaction from a logged-in user.

CVSS severity5.1
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected cross-site scripting in five ELECOM WAB access points allows attackers to execute arbitrary scripts in a logged-in user's browser. Published advisories identify only the WebUI configuration interface and do not disclose which request parameter is reflected or where output encoding fails. WAB-I1750-PS, WAB-M2133, and WAB-S1167-PS 2.0.5 and earlier are affected, as are WAB-M1775-PS and WAB-S1775 2.1.9 and earlier; exploitation requires adjacent-network access and passive interaction from a logged-in user.

The record

CVE
CVE-2026-44387
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
ELECOM CO., LTD.
Product
WAB-I1750-PS
Classifications
CWE-79, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=v2.0.5

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

ELECOM CO., LTD. · WAB-I1750-PSversion=0 <=v2.0.5
ELECOM CO., LTD. · WAB-S1167-PSversion=0 <=v2.0.5
ELECOM CO., LTD. · WAB-S1775version=0 <=v2.1.9
ELECOM CO., LTD. · WAB-M1775-PSversion=0 <=v2.1.9
ELECOM CO., LTD. · WAB-M2133version=0 <=v2.0.5

Published CVSS scores

5.1JPCERT/CCCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
5.2JPCERT/CCCVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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