CVE-2025-33191

// CVE-2025-33191 PoC - Invalid Memory Read in NVIDIA DGX Spark GB10 OSROOT Firmware // This PoC demonstrates the vulnerability concept (for authorized testing only) #include <stdio.h> #include <stdlib.h> #include <stdint.h> // Simulated OSROOT firmware memory access function void osroot_memory_read(uintptr_t address) { volatile uint32_t *ptr = (volatile uint32_t *)address; // Vulnerable: No bounds checking on address uint32_t value = *ptr; // Invalid memory read occurs here printf("Read value: 0x%08x\n", value); } // Trigger the vulnerability int trigger_vulnerability(void) { printf("[*] Attempting to trigger CVE-2025-33191...\n"); // Attempt to read from invalid/unmapped memory address uintptr_t invalid_address = 0xFFFFFFFF; // Invalid memory region printf("[*] Calling osroot_memory_read with invalid address: 0x%lx\n", invalid_address); osroot_memory_read(invalid_address); printf("[!] Vulnerability triggered - invalid memory read occurred\n"); return 0; } int main(int argc, char *argv[]) { printf("=== CVE-2025-33191 PoC ===\n"); printf("Target: NVIDIA DGX Spark GB10 OSROOT Firmware\n"); printf("Vulnerability: Invalid Memory Read leading to DoS\n\n"); trigger_vulnerability(); return 0; } // Usage: This PoC requires local access to the DGX Spark device // Compile: gcc -o cve_2025_33191_poc cve_2025_33191_poc.c // Run on target device with appropriate privileges

{"cve": {"id": "CVE-2025-33191", "sourceIdentifier": "[email protected]", "published": "2025-11-25T18:15:50.657", "lastModified": "2025-12-02T18:19:38.983", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "NVIDIA DGX Spark GB10 contains a vulnerability in OSROOT firmware, where an attacker could cause an invalid memory read. A successful exploit of this vulnerability might lead to denial of service."}, {"lang": "es", "value": "NVIDIA DGX Spark GB10 contiene una vulnerabilidad en el firmware OSROOT, donde un atacante podría causar una lectura de memoria no válida. Un exploit exitoso de esta vulnerabilidad podría llevar a una denegación de servicio."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L", "baseScore": 5.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.5, "impactScore": 2.7}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:nvidia:dgx_os:-:*:*:*:*:*:*:*", "matchCriteriaId": "40EF912C-72C4-4758-9157-169CE92B33C5"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:nvidia:dgx_spark:-:*:*:*:*:*:*:*", "matchCriteriaId": "76975E53-4E5C-4C6D-85D9-EE2879F960DF"}]}]}], "references": [{"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-33191", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5720", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-33191", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}