CVE-2025-40842Network attack vector

Information disclosure and modification via undisclosed XSS

Published Mar 25, 2026 · Updated Mar 25, 2026

Cross-site scripting in Ericsson Indoor Connect 8855 before 2025.Q3 allows remote authenticated users to read and modify information. Ericsson has not published the affected web-interface component or how it incorporates attacker-controlled input into generated pages. Exploitation requires low-privileged network access and passive interaction by another user; availability is not affected.

CVSS severity8.5
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Ericsson Indoor Connect 8855 before 2025.Q3 allows remote authenticated users to read and modify information. Ericsson has not published the affected web-interface component or how it incorporates attacker-controlled input into generated pages. Exploitation requires low-privileged network access and passive interaction by another user; availability is not affected.

The record

CVE
CVE-2025-40842
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
Ericsson
Product
Indoor Connect 8855
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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 <2025.Q3 changes=[{"at":"2025.Q3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ericsson · Indoor Connect 8855version=0 <2025.Q3 changes=[{"at":"2025.Q3","status":"unaffected"}]

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.5EricssonCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA: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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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