CVE-2026-7413: A hidden, persistent backdoor was found in Yarbo firmware v2.3.9 that provides remote, unauthenticated (or wea

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HIGH 7.2MITIGATEMITIGATE

CVE-2026-7413 is a high-severity flaw (CVSS 7.2) affecting lawn mower firmware, lawn mower pro firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A hidden, persistent backdoor was found in Yarbo firmware v2.3.9 that provides remote, unauthenticated (or weakly authenticated) access to privileged functionality. The backdoor is undocumented, cannot be disabled via user-facing settings, and survives factory reset and ordinary firmware updates.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-912
Published	2026-05-07
Last modified	2026-10-26

Publisher (CNA): Austin Hackers Anonymous · Vendor: yarbo

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-07 17:15 UTCPublished CVE record published
2026-10-26 20:10 UTCUpdated Record last modified

yarbo lawn mower firmware MITIGATE

Affected: 2.3.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.9

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

yarbo lawn mower pro firmware MITIGATE

Affected: 2.3.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.9

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2026-7413?

lawn mower firmware: mitigate or apply the listed mitigation; lawn mower pro firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-7413 being exploited?

CVE-2026-7413 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-2026-7413 affect?

CVE-2026-7413 affects lawn mower firmware, lawn mower pro firmware. Severity is high (CVSS 7.2). A hidden, persistent backdoor was found in Yarbo firmware v2.3.9 that provides remote, unauthenticated (or weakly authenticated) access to privileged functionality. The backdoor is undocumented, cannot be disabled via user-facing settings,

How urgent is CVE-2026-7413?

Priority 42/100. High severity; Public exploit reference

Related CVEs

CVE-2026-7414 CRITICAL 9.8 MITIGATE MITIGATE Yarbo firmware v2.3.9 contains hardcoded administrative credentials embedded in the firmware image
CVE-2026-7415 CRITICAL 9.8 MITIGATE MITIGATE The MQTT broker embedded in Yarbo firmware v2.3.9 is configured to allow anonymous connections with no topic-l

References

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