CVE-2024-34579

Code execution via unchecked C5V data length

Published Jan 17, 2025 · Updated Feb 12, 2025

Stack-based buffer overflow in Fuji Electric ALPHA5 Smart 4.5 and earlier allows remote attackers to execute code via crafted C5V files. The C5V parser copies user-supplied data into a stack buffer without validating its length, allowing the copy to exceed the buffer. Exploitation requires a user to visit a malicious page or open a malicious file, and successful exploitation runs code in the current process.

CVSS severity8.5
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Fuji Electric ALPHA5 Smart 4.5 and earlier allows remote attackers to execute code via crafted C5V files. The C5V parser copies user-supplied data into a stack buffer without validating its length, allowing the copy to exceed the buffer. Exploitation requires a user to visit a malicious page or open a malicious file, and successful exploitation runs code in the current process.

The record

CVE
CVE-2024-34579
Published
Jan 17, 2025
Updated
Feb 12, 2025
Vendor
Fuji Electric
Product
ALPHA5 Smart
Classifications
CWE-121, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 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 <=4.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Fuji Electric · ALPHA5 Smartversion=0 <=4.5

Published CVSS scores

7.8ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.5ICS-CERTCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1203Exploitation for Client Execution

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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