What’s Vulnerable › Vulnerabilities

CVE-2021-35067

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-07 · updated 2026-06-17
• Weakness: CWE-294

Description

Meross MSG100 devices before 3.2.3 allow an attacker to replay the same data or similar data (e.g., an attacker who sniffs a Close message can transmit an acceptable Open message).

Affected products

• Meross Msg100 Firmware: before 3.2.3 — fixed in 3.2.3

How to fix

Upgrade to a fixed version: Meross Msg100 Firmware 3.2.3. Check the vendor advisory for mitigations.

References

• https://infosec.rm-it.de/2021/06/18/meross-smart-wi-fi-garage-door-opener-analysis/
• https://infosec.rm-it.de/?p=878&preview=1&_ppp=219bc85c2f
• https://infosec.rm-it.de/2021/06/18/meross-smart-wi-fi-garage-door-opener-analysis/
• https://infosec.rm-it.de/?p=878&preview=1&_ppp=219bc85c2f

Get alerted when CVE-2021-35067 or the next vulnerability affects your stack