CVE-2024-9684Public exploitNetwork attack vector

Server crash via overlapping memcpy arguments

Published Dec 23, 2025 · Updated Dec 23, 2025

Out-of-bounds memory operations in FreyrSCADA IEC 60870-5-104 server 21.06.008 allow remote attackers to crash the server. The libx86_x64-iec104.a library passes overlapping source and destination regions to memcpy while processing specific replayed IEC 104 message sequences, triggering memcpy-param-overlap and a segmentation fault. Unauthenticated network access is sufficient, and the demonstrated consequence is process termination rather than data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds memory operations in FreyrSCADA IEC 60870-5-104 server 21.06.008 allow remote attackers to crash the server. The libx86_x64-iec104.a library passes overlapping source and destination regions to memcpy while processing specific replayed IEC 104 message sequences, triggering memcpy-param-overlap and a segmentation fault. Unauthenticated network access is sufficient, and the demonstrated consequence is process termination rather than data disclosure or modification.

The record

CVE
CVE-2024-9684
Published
Dec 23, 2025
Updated
Dec 23, 2025
Vendor
FreyrSCADA Embedded Solution
Product
IEC 60870-5-104
Classifications
CWE-119, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 23, 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?

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  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FreyrSCADA Embedded Solution · IEC 60870-5-104version=0 <*

Published CVSS scores

7.5Red Hat, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T0814Denial of Service

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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