CVE-2026-33253

SYSTEM code execution via unquoted service paths

Published Mar 25, 2026 · Updated Mar 25, 2026

Unquoted service paths in SANYO DENKI SANUPS products allow local users to execute arbitrary code with SYSTEM privilege. The installer registers service executable paths without quotation marks, so Windows can resolve an attacker-planted executable earlier in a path containing spaces. SANUPS SOFTWARE 1.0.0 through 1.1.4 and 2.0.0 through 2.0.2 and STANDALONE 1.0.1 through 1.1.4 are affected; exploitation requires write access to the system-drive root.

CVSS severity8.4
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unquoted service paths in SANYO DENKI SANUPS products allow local users to execute arbitrary code with SYSTEM privilege. The installer registers service executable paths without quotation marks, so Windows can resolve an attacker-planted executable earlier in a path containing spaces. SANUPS SOFTWARE 1.0.0 through 1.1.4 and 2.0.0 through 2.0.2 and STANDALONE 1.0.1 through 1.1.4 are affected; exploitation requires write access to the system-drive root.

The record

CVE
CVE-2026-33253
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
SANYO DENKI CO., LTD.
Product
SANUPS SOFTWARE STANDALONE
Classifications
CWE-428, T1574.009
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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=Ver.1.0.1 to Ver.1.1.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

SANYO DENKI CO., LTD. · SANUPS SOFTWARE STANDALONEversion=Ver.1.0.1 to Ver.1.1.4
SANYO DENKI CO., LTD. · SANUPS SOFTWAREversion=Ver.1.0.0 to Ver.1.1.4; version=Ver.2.0.0 to Ver.2.0.2

Published CVSS scores

8.4JPCERT/CCCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
6.7JPCERT/CCCVSS:3.0/AV:L/AC:L/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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