CVE-2023-46892: The radio frequency communication protocol being used by Meross MSH30Q 4.5.23 is vulnerable to replay attacks,

Routine

HIGH 8.8MITIGATE

CVE-2023-46892 is a high-severity flaw (CVSS 8.8) affecting msh30q firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The radio frequency communication protocol being used by Meross MSH30Q 4.5.23 is vulnerable to replay attacks, allowing attackers to record and replay previously captured communication to execute unauthorized commands or actions (e.g., thermostat's temperature).

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-294
Published	2024-01-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: meross

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

Am I affected?

Timeline

2024-01-23 21:15 UTCPublished CVE record published
2026-06-17 06:31 UTCUpdated Record last modified

meross msh30q firmware MITIGATE

Affected: 4.5.23

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.5.23

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-2023-46892?

msh30q firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-46892 being exploited?

CVE-2023-46892 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-2023-46892 affect?

CVE-2023-46892 affects msh30q firmware. Severity is high (CVSS 8.8). The radio frequency communication protocol being used by Meross MSH30Q 4.5.23 is vulnerable to replay attacks, allowing attackers to record and replay previously captured communication to execute unauthorized commands or actions (e.g., ther

How urgent is CVE-2023-46892?

Priority 36/100. High severity

Related CVEs

CVE-2023-46889 MEDIUM 5.7 MITIGATE Meross MSH30Q 4.5.23 is vulnerable to Cleartext Transmission of Sensitive Information

References

← Back to latest CVEs