CVE-2020-25171

Code execution via unchecked VPR file parsing

Published Feb 19, 2021 · Updated Aug 4, 2024

Out-of-bounds write in VPR file parsing in Fuji Electric V-Server Lite before 3.3.24.0 allows remote attackers to execute arbitrary code. Its VPR parser fails to validate user-supplied data before writing beyond the end of an allocated data structure. Exploitation requires the target to visit a malicious page or open a malicious VPR file, and successful exploitation runs code in the current process.

CVSS severity7.8
High
EPSS probability1.15%
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 write in VPR file parsing in Fuji Electric V-Server Lite before 3.3.24.0 allows remote attackers to execute arbitrary code. Its VPR parser fails to validate user-supplied data before writing beyond the end of an allocated data structure. Exploitation requires the target to visit a malicious page or open a malicious VPR file, and successful exploitation runs code in the current process.

The record

CVE
CVE-2020-25171
Published
Feb 19, 2021
Updated
Aug 4, 2024
Vendor
Fuji Electric
Product
V-Server Lite
Classifications
CWE-787, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=unspecified <3.3.24.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Fuji Electric · V-Server Liteversion=unspecified <3.3.24.0

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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
T1203Exploitation for Client Execution
T1204.002Malicious 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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