CVE-2025-29659: Yi IOT XY-3820 6.0.24.10 is vulnerable to Remote Command Execution via the "cmd_listen" function located in th

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CRITICAL 9.8REMOTEMITIGATE

CVE-2025-29659 is a critical-severity flaw (CVSS 9.8) affecting xy-3820 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Yi IOT XY-3820 6.0.24.10 is vulnerable to Remote Command Execution via the "cmd_listen" function located in the "cmd" binary.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-285
Published	2025-04-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: yiiot

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

Am I affected?

Timeline

2025-04-21 15:16 UTCPublished CVE record published
2026-06-17 09:05 UTCUpdated Record last modified

yiiot xy-3820 firmware MITIGATE

Affected: 6.0.24.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0.24.10

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · byobu · FIXED · 7.23-1.fc46 · FEDORA-2026-08f2b53446 · source

sudo dnf upgrade --advisory=FEDORA-2026-08f2b53446

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/Yasha-ops/RCE-YiIOT
Write-up: github.com/Yasha-ops/vulnerability-research/tree/master/CVE-2025-29659

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-2025-29659?

xy-3820 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-29659 being exploited?

CVE-2025-29659 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-2025-29659 affect?

CVE-2025-29659 affects xy-3820 firmware. Severity is critical (CVSS 9.8). Yi IOT XY-3820 6.0.24.10 is vulnerable to Remote Command Execution via the "cmd_listen" function located in the "cmd" binary.

How urgent is CVE-2025-29659?

Priority 66/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-29660 CRITICAL 9.8 MITIGATE A vulnerability exists in the daemon process of the Yi IOT XY-3820 v6.0.24.10, which exposes a TCP service on

References

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