CVE-2024-8887Network attack vector

Unauthenticated service interruption via login bypass

Published Sep 18, 2024 · Updated Sep 18, 2024

Authentication bypass in CIRCUTOR Q-SMT firmware 1.0.4 allows remote attackers to access all web functions and interrupt the device. The login page does not enforce authentication before exposing web-level functions that interact with the appliance; the specific request-validation defect is undisclosed. Network access to the embedded web service is required, and invoking the exposed device-control functions can cause a service interruption.

CVSS severity8.6
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in CIRCUTOR Q-SMT firmware 1.0.4 allows remote attackers to access all web functions and interrupt the device. The login page does not enforce authentication before exposing web-level functions that interact with the appliance; the specific request-validation defect is undisclosed. Network access to the embedded web service is required, and invoking the exposed device-control functions can cause a service interruption.

The record

CVE
CVE-2024-8887
Published
Sep 18, 2024
Updated
Sep 18, 2024
Vendor
CIRCUTOR
Product
Q-SMT
Classifications
CWE-1284, T1210, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2024Record 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=1.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CIRCUTOR · Q-SMTversion=1.0.4

Published CVSS scores

8.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
10.0INCIBECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1210Exploitation of Remote Services
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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