CVE-2020-36928Public exploit

System-level code execution via unquoted service path

Published Jan 15, 2026 · Updated Jan 15, 2026

Unquoted service path handling in Brother BRAgent 1.38 allows local users to execute code with LocalSystem privileges. The WBA_Agent_Client service registers C:\Program Files (x86)\Brother\BRAgent\BRAgtSrv.exe without quotation marks, so Windows can select an attacker-planted executable from a preceding path segment when the service starts. Low-privileged local access and permission to place an executable in a searched path location are required; successful exploitation grants system-level code execution.

CVSS severity8.5
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unquoted service path handling in Brother BRAgent 1.38 allows local users to execute code with LocalSystem privileges. The WBA_Agent_Client service registers C:\Program Files (x86)\Brother\BRAgent\BRAgtSrv.exe without quotation marks, so Windows can select an attacker-planted executable from a preceding path segment when the service starts. Low-privileged local access and permission to place an executable in a searched path location are required; successful exploitation grants system-level code execution.

The record

CVE
CVE-2020-36928
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Brother Industries, Ltd.
Product
BRAgent
Classifications
CWE-428, T1574.009
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.38

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Brother Industries, Ltd. · BRAgentversion=1.38

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
7.8VulnCheckCVSS: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 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 exploitPublished

Weakness, pattern, technique

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo