CVE-2025-41359

Local code execution via unquoted service path

Published Mar 26, 2026 · Updated Mar 26, 2026

Unquoted service path handling in Smallsrv Small HTTP Server 3.06.36 allows local users to execute arbitrary code on Windows. The Windows service registers C:\Program Files (x86)\shttps_mg\http.exe service without quoting the executable path, so Windows can select an attacker-placed executable from an earlier path segment. Low local privileges and write access to a searched directory are required; execution occurs when the affected service starts.

CVSS severity8.5
High
EPSS probability0.15%
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 handling in Smallsrv Small HTTP Server 3.06.36 allows local users to execute arbitrary code on Windows. The Windows service registers C:\Program Files (x86)\shttps_mg\http.exe service without quoting the executable path, so Windows can select an attacker-placed executable from an earlier path segment. Low local privileges and write access to a searched directory are required; execution occurs when the affected service starts.

The record

CVE
CVE-2025-41359
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
Smallsrv
Product
Small HTTP Server
Classifications
CWE-428, T1574.009
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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=3.06.36

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Smallsrv · Small HTTP Serverversion=3.06.36

Published CVSS scores

8.5INCIBECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8INCIBECVSS:3.1/AV:L/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-428Unquoted Search Path or Element
T1574.009Path Interception by Unquoted Path

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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