CVE-2023-54338Public exploit

LocalSystem code execution via unquoted service path

Published Jan 13, 2026 · Updated Jan 13, 2026

Unquoted service path in Philippe Jounin Tftpd32 Service Edition 4.60 allows local users to execute code as LocalSystem. The Tftpd32_svc service registers C:\Program Files (x86)\Tftpd32_SE\tftpd32_svc.exe without quotes, allowing Windows to select an earlier executable at a space-delimited path. Exploitation requires write access to such a candidate path and a service start; successful code inherits the LocalSystem account.

CVSS severity8.5
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unquoted service path in Philippe Jounin Tftpd32 Service Edition 4.60 allows local users to execute code as LocalSystem. The Tftpd32_svc service registers C:\Program Files (x86)\Tftpd32_SE\tftpd32_svc.exe without quotes, allowing Windows to select an earlier executable at a space-delimited path. Exploitation requires write access to such a candidate path and a service start; successful code inherits the LocalSystem account.

The record

CVE
CVE-2023-54338
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Philippe Jounin
Product
Tftpd32 Service Edition
Classifications
CWE-428, T1574.009
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record 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=4.60

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Philippe Jounin · Tftpd32 Service Editionversion=4.60

Published CVSS scores

8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.4VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-428Unquoted Search Path or Element
T1574.009Hijack Execution Flow: Path Interception by Unquoted Path

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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