CVE-2024-30088Active Exploitation(microsoft / windows_10_1507)

CVE-2024-30088 is a Windows kernel privilege escalation vulnerability caused by a Time-of-Check to Time-of-Use (TOCTOU) race condition. The vulnerability exists at the boundary between user-mode and kernel-mode memory. A user-controlled buffer is validated by the kernel, but its contents can change before the kernel actually writes to it. By winning this race, an attacker can redirect privileged kernel writes, leading to memory corruption and ultimately SYSTEM privileges. According to public analysis, the flaw was exploited in the wild by APT34 (OilRig), making it another reminder that race conditions can be just as powerful as classic memory corruption bugs. It's an excellent case study in TOCTOU vulnerabilities, kernel/user memory boundaries, synchronization, and secure pointer validation.

DarkZero from @hackthebox_eu features cross-forest MSSQL linked servers, four privesc paths (token theft, ADCS/RunAsCS, NTLM reflection via CMTI, CVE-2024-30088), and cross-forest TGT delegation for domain takeover. https://0xdf.gitlab.io/2026/04/04/htb-darkzero.html

One unchecked integer multiplication can own the entire Windows kernel. In CVE-2024-30088, an integer overflow caused the kernel to allocate a smaller buffer than required while continuing to process it as if it were large enough. The resulting out-of-bounds write let attackers corrupt kernel memory, build arbitrary read/write primitives, and ultimately replace their process token with the SYSTEM token. https://github.com/tykawaii98/CVE-2024-30088

以下の4脆弱性がランサムウェアに悪用されたことが確認された。米国サイバーセキュリティ・社会基盤安全保障庁(CISA)の既知の悪用された脆弱性カタログが更新。 - Windowsの権限昇格CVE-2024-49039, CVE-2024-30088 - CyberPanelの無認証root権限RCE CVE-2024-51567 - FirefoxのRCE CVE-2024-9680 https://t.co/rE32uwR7pJ

Dropped 2 Writeups Windows & Driver Internals → Exploitation Kernel Exploit ( CVEs + Root Cause → Exploit) • CVE-2025-62215 • CVE-2024-30088 • CVE-2024-21338 • Stack Overflow & Arbitrary Overwrite (Kernel) https://0xdbgman.github.io/posts/pwning-the-kernel-windows-internals-driver-exploitation/ #ExploitDevelopment

https://medium.com/@shira.borochovich/cve-2024-30088-kernel-level-toctou-vulnerability-abused-by-apt34-for-privilege-escalation-in-5a75035bf076

https://github.com/tykawaii98/CVE-2024-30088

🚨 CVE-2024-30088: Windows Kernel Local Privilege Escalation Alert 🚨 Microsoft Windows A local privilege escalation vulnerability has been disclosed in the Windows Kernel, allowing any local code execution to escalate privileges to NT AUTHORITY\SYSTEM. A public proof of concept is available, making this a high-risk post-exploitation primitive. Risk Severity: Critical. CVSS 7.0. Public proof of concept available. Reliable local privilege escalation on a massively deployed target. Impact: Unauthenticated local privilege escalation to SYSTEM. Full bypass of UAC and Windows security boundaries. Kernel-level compromise enabling rootkits and bootkits. Credential theft from LSA memory. Accelerated ransomware deployment and lateral movement. Root Cause: CWE-416, Use-After-Free in the Windows Kernel Object Manager. Improper synchronization and reference counting of kernel object handles. A race condition allows stale pointers to freed token objects to be reused and corrupted. Attackers can: Trigger a race condition via repeated token handle operations. Corrupt kernel memory and manipulate access tokens. Enable privileged rights such as SeDebugPrivilege. Impersonate SYSTEM and gain unrestricted control of the host. Are You Affected? Vulnerable systems include Windows 10 versions 1809 through 22H2, Windows 11 versions 21H2 through 23H2, Windows Server 2019, 2022, and 2025, and Server Core installations prior to February 2025 updates. Patched systems include all hosts with the February 2025 Security Update KB5034763 or later cumulative updates. Immediate Action Required: Update all systems to KB5034763 or later immediately. Harden endpoints by enabling VBS and HVCI where supported. Hunt for unexpected SYSTEM-level processes and abnormal privilege use. Respond by isolating suspected systems, capturing memory dumps, and rotating all credentials. Kernel privilege escalations are ransomware force multipliers. Patch fast, or assume SYSTEM is already lost. 🛡️ #ostorlabCVE