CVE-2020-36928: Brother BRAgent 1.38 contains an unquoted service path vulnerability in the WBA_Agent_Client service running w

Routine

HIGH 7.8DOWNGRADE

CVE-2020-36928 is a high-severity flaw (CVSS 7.8) affecting bragent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Brother BRAgent 1.38 contains an unquoted service path vulnerability in the WBA_Agent_Client service running with LocalSystem privileges. Attackers can exploit the unquoted path in C:\Program Files (x86)\Brother\BRAgent\ to inject and execute malicious code with elevated system permissions.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-428
Published	2026-01-16
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: brother

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-16 00:16 UTCPublished CVE record published
2026-06-17 03:16 UTCUpdated Record last modified

brother bragent DOWNGRADE

Affected: 1.38

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.38

1. Check installed version

apt-cache policy bragent || rpm -q bragent || bragent --version

2. No fixed release: DOWNGRADE to a release before 1.38 (Debian / Ubuntu)

apt-cache madison bragent sudo apt install bragent=<VERSION_BEFORE_1.38> sudo apt-mark hold bragent

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bragent sudo dnf downgrade bragent-<VERSION_BEFORE_1.38> sudo dnf versionlock add bragent

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-36928?

bragent: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-36928 being exploited?

CVE-2020-36928 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-36928 affect?

CVE-2020-36928 affects bragent. Severity is high (CVSS 7.8). Brother BRAgent 1.38 contains an unquoted service path vulnerability in the WBA_Agent_Client service running with LocalSystem privileges. Attackers can exploit the unquoted path in C:\Program Files (x86)\Brother\BRAgent\ to inject and execu

How urgent is CVE-2020-36928?

Priority 37/100. High severity; Public exploit reference

Software pages

Brother printers vulnerabilities

References

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