CVE-2024-0695Public exploitNetwork attack vector

Service interruption via crafted USERNAME request

Published Jan 18, 2024 · Updated Jun 17, 2025

Improper resource shutdown in EFS Easy Chat Server 3.1 allows remote authenticated users to interrupt service via a crafted USERNAME. The HTTP GET request handler processes attacker-controlled USERNAME data into the denial-of-service condition, but the faulty routine and unreleased resource are undisclosed. A valid low-privilege session is required, and the documented consequence is limited to service interruption.

CVSS severity5.3
Medium
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper resource shutdown in EFS Easy Chat Server 3.1 allows remote authenticated users to interrupt service via a crafted USERNAME. The HTTP GET request handler processes attacker-controlled USERNAME data into the denial-of-service condition, but the faulty routine and unreleased resource are undisclosed. A valid low-privilege session is required, and the documented consequence is limited to service interruption.

The record

CVE
CVE-2024-0695
Published
Jan 18, 2024
Updated
Jun 17, 2025
Vendor
EFS Software, Inc.
Product
Easy Chat Server
Classifications
CWE-404, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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=3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

EFS Software, Inc. · Easy Chat Serverversion=3.1

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:N/A:P
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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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