meshtastic firmware vulnerabilities and fixes

Recent CVEs affecting meshtastic firmware, with upgrade or downgrade steps. 1 tracked.

Also searched as: meshtasticfirmware.

meshtastic firmware has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-07-20. Highest priority: CVE-2026-42566 (score 42/100).

• CVE-2026-42566 HIGH 7.5 UPGRADE Meshtastic is an open source mesh networking solution

FAQ

How do I fix meshtastic firmware vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is meshtastic firmware being exploited right now?

None of the tracked meshtastic firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which meshtastic firmware CVE should I patch first?

CVE-2026-42566 currently ranks highest (42/100): Meshtastic is an open source mesh networking solution.

← Back to latest CVEs