CVE-2025-40836Network attack vector

Authenticated command execution with escalated privileges

Published Sep 25, 2025 · Updated Sep 25, 2025

Improper input validation in Ericsson Indoor Connect 8855 before 2025.Q2 allows remote authenticated users to execute privileged commands. Ericsson has not disclosed the affected input, processing locus, or validation failure that permits command execution. Low-privileged network access is required; exploitation exposes or modifies user and configuration data, alters system files, and interrupts service, although the failure mode is unspecified.

CVSS severity8.7
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Ericsson Indoor Connect 8855 before 2025.Q2 allows remote authenticated users to execute privileged commands. Ericsson has not disclosed the affected input, processing locus, or validation failure that permits command execution. Low-privileged network access is required; exploitation exposes or modifies user and configuration data, alters system files, and interrupts service, although the failure mode is unspecified.

The record

CVE
CVE-2025-40836
Published
Sep 25, 2025
Updated
Sep 25, 2025
Vendor
Ericsson
Product
Indoor Connect 8855
Classifications
CWE-20, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2025Record 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.Q2 changes=[{"at":"2025.Q2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ericsson · Indoor Connect 8855version=0 <2025.Q2 changes=[{"at":"2025.Q2","status":"unaffected"}]

Published CVSS scores

8.7EricssonCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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-20Improper Input Validation
T1059Command and Scripting Interpreter

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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