CVE-2023-47586

Code execution via crafted VPR file parsing

Published Nov 15, 2023 · Updated Aug 29, 2024

Heap-based buffer overflows in Fuji Electric V-Server and V-Server Lite 4.0.18.0 and earlier allow attackers to execute arbitrary code. The VPR file parser processes crafted file data beyond heap-buffer bounds; Fuji Electric has not disclosed the affected routine or field. Opening the file is required, after which attackers obtain information disclosure or code execution in the user's context.

CVSS severity7.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflows in Fuji Electric V-Server and V-Server Lite 4.0.18.0 and earlier allow attackers to execute arbitrary code. The VPR file parser processes crafted file data beyond heap-buffer bounds; Fuji Electric has not disclosed the affected routine or field. Opening the file is required, after which attackers obtain information disclosure or code execution in the user's context.

The record

CVE
CVE-2023-47586
Published
Nov 15, 2023
Updated
Aug 29, 2024
Vendor
Fuji Electric
Product
V-Server
Classifications
CWE-787, CWE-122, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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=V4.0.18.0 and earlier

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Fuji Electric · V-Serverversion=V4.0.18.0 and earlier
Fuji Electric · V-Server Liteversion=0 <V4.0.18.0; version=V4.0.18.0 and earlier

Published CVSS scores

7.8JPCERT/CCCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious File

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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