CVE-2025-27840
6.8 · MEDIUMOverview
CVE-2025-27840 is a medium-severity vulnerability affecting espressif esp32_firmware. It was published on March 8, 2025 and has a CVSS 3.1 base score of 6.8 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory).
Remediation
Check the references section for vendor advisories and patches from espressif. Update esp32_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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References
Frequently Asked Questions
What is CVE-2025-27840?
CVE-2025-27840 is a medium-severity vulnerability affecting espressif esp32_firmware. It was published on March 8, 2025 and has a CVSS 3.1 base score of 6.8 (MEDIUM).
How severe is CVE-2025-27840?
This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-27840?
Check the references section for vendor advisories and patches from espressif. Update esp32_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-27840?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-27840 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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