PatchTheCVEespressif vulnerabilities
Recent CVEs affecting espressif products. 2 tracked.
espressif has 2 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-05-12. Highest priority: CVE-2026-42854 (score 59/100).
- CVE-2026-42854 CRITICAL 9.8 UPGRADE arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontr
- CVE-2026-42855 HIGH 7.5 UPGRADE arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontr
FAQ
How do I fix espressif 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 espressif being exploited right now?
None of the tracked espressif CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which espressif CVE should I patch first?
CVE-2026-42854 currently ranks highest (59/100): arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontr.