CVE-2025-55293
9.4 · CRITICALOverview
CVE-2025-55293 is a critical-severity vulnerability affecting meshtastic meshtastic_firmware. It was published on August 18, 2025 and has a CVSS 3.1 base score of 9.4 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.4, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Meshtastic is an open source mesh networking solution. Prior to v2.6.3, an attacker can send NodeInfo with a empty publicKey first, then overwrite it with a new key. First sending a empty key bypasses 'if (p.public_key.size > 0) {', clearing the existing publicKey (and resetting the size to 0) for a known node. Then a new key bypasses 'if (info->user.public_key.size > 0) {', and this malicious key is stored in NodeDB. This vulnerability is fixed in 2.6.3.
Remediation
Check the references section for vendor advisories and patches from meshtastic. Update meshtastic_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 |
|---|---|---|---|
| meshtastic | meshtastic_firmware | >= 0, < 2.6.3 | Affected |
Frequently Asked Questions
What is CVE-2025-55293?
CVE-2025-55293 is a critical-severity vulnerability affecting meshtastic meshtastic_firmware. It was published on August 18, 2025 and has a CVSS 3.1 base score of 9.4 (CRITICAL).
How severe is CVE-2025-55293?
This vulnerability has a CVSS 3.1 base score of 9.4, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-55293?
Check the references section for vendor advisories and patches from meshtastic. Update meshtastic_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-2025-55293?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-55293 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
AI agents map your attack surface to find vulnerabilities like this one.
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