Use After Free
Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.
How It Works
Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated. When memory is freed, it returns to the allocator's pool and may be reallocated for an entirely different purpose. The original pointer becomes "dangling"—it still points to that memory location, but the contents are now undefined or controlled by different code.
Attackers exploit this by orchestrating a three-step process: first, trigger the memory deallocation; second, cause the allocator to reassign that same memory region with attacker-controlled data (often through carefully timed allocations); third, trigger the program to dereference the dangling pointer. Because the memory now contains attacker data instead of the expected object, this can corrupt function pointers, vtables, or other critical structures.
The vulnerability is particularly dangerous in object-oriented code where freed objects contain function pointers or virtual method tables. When the program calls a method on the freed object, it may jump to attacker-controlled addresses. Browser engines are frequent targets because DOM manipulation allows attackers to control object allocation and deallocation timing through JavaScript, while kernel UAFs enable privilege escalation by manipulating file descriptors or process structures.
Impact
- Arbitrary code execution — attacker overwrites function pointers or vtables to redirect program flow to malicious code
- Privilege escalation — in kernel UAFs, gain root/system privileges by corrupting process credentials or security tokens
- Information disclosure — read sensitive data from reallocated memory that wasn't properly cleared
- Sandbox escape — break out of browser or application sandboxes by corrupting security-critical objects
- Denial of service — crash the application through memory corruption, though attackers typically aim for exploitation rather than simple crashes
Real-World Examples
CVE-2021-30551 affected Chrome's V8 JavaScript engine, where improper handling of JavaScript typed arrays created a use-after-free in object property management. Attackers could trigger object deletion while retaining references, then reallocate the memory with controlled data to achieve code execution within the renderer process.
Windows kernel vulnerabilities like CVE-2020-17087 involved use-after-free conditions in the Windows keyboard layout handling code. Attackers exploited race conditions in keyboard layout switching to free kernel objects while retaining references, then reallocated the memory with controlled structures to elevate privileges from user to SYSTEM level.
The WhatsApp vulnerability CVE-2019-11932 demonstrated UAF exploitation in media parsing code, where specially crafted GIF files triggered premature memory deallocation. Subsequent access to the freed buffers allowed remote code execution without user interaction beyond receiving the malicious file.
Mitigation
- Memory-safe languages — use Rust, Go, Swift, or other languages with automatic memory management
- Smart pointers — employ RAII patterns and reference counting (unique_ptr, shared_ptr in C++)
- AddressSanitizer (ASAN) — detect UAF during testing through instrumented builds
- Immediate pointer nullification — set pointers to NULL after free() to cause immediate crashes rather than exploitable conditions
- Garbage collection — languages with GC prevent manual memory management errors
- Control Flow Integrity (CFI) — limits exploit impact by validating function pointer targets
- Heap hardening — allocator metadata protection and delayed reuse policies increase exploitation difficulty
Recent CVEs (6847)
Windows Active Directory Certificate Services (AD CS) Remote Code Execution Vulnerability. Rated medium severity (CVSS 6.6), this vulnerability is remotely exploitable. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows OLE Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows Online Certificate Status Protocol (OCSP) SnapIn Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Remote Procedure Call Runtime Remote Code Execution Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Microsoft Outlook Remote Code Execution Vulnerability. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable, no authentication required. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Microsoft Office Graphics Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Active Template Library Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Microsoft ODBC Driver Remote Code Execution Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Microsoft Failover Cluster Remote Code Execution Vulnerability. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows Win32k Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A vulnerability exists in the memory management subsystem of the Linux kernel. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
The bluetooth HCI host layer logic not clearing a global reference to a state pointer after handling connection events may allow a malicious HCI Controller to cause the use of a dangling reference in. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity. No vendor patch available.
A use-after-free issue was discovered in Py_FindObjects() function in SciPy versions prior to 1.8.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in the Linux kernel through 6.4.2. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A use-after-free condition existed in `NotifyOnHistoryReload` where a `LoadingSessionHistoryEntry` object was freed and a reference to that object remained. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An attacker could have triggered a use-after-free condition when creating a WebRTC connection over HTTPS. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Memory corruption in Audio while running concurrent tunnel playback or during concurrent audio tunnel recording sessions. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A flaw was found in the MCTP protocol in the Linux kernel. Rated medium severity (CVSS 4.7). This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
In lwis_i2c_device_disable of lwis_device_i2c.c, there is a possible UAF due to a logic error in the code. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
there is a possible way to corrupt memory due to a use after free. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
A maliciously crafted SKP file in Autodesk products is used to trigger use-after-free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A maliciously crafted SKP file in Autodesk Navisworks 2023 and 2022 be used to trigger use-after-free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Guest View in Google Chrome prior to 114.0.5735.198 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Media in Google Chrome prior to 114.0.5735.198 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A use-after-free flaw was found in mt7921_check_offload_capability in drivers/net/wireless/mediatek/mt76/mt7921/init.c in wifi mt76/mt7921 sub-component in the Linux Kernel. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
A use-after-free issue was addressed with improved memory management. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A use-after-free issue was addressed with improved memory management. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A use-after-free issue was addressed with improved memory management. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
OpenPrinting CUPS is a standards-based, open source printing system for Linux and other Unix-like operating systems. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. Public exploit code available.
The VMware vCenter Server contains a use-after-free vulnerability in the implementation of the DCERPC protocol. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
There exists a use after free/double free in libwebp. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A potential use-after-free in libaudio was fixed by disabling the AAudio backend when running on Android API below version 30. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Microsoft Publisher Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A heap use after free issue was discovered in ImageMagick's ReplaceXmpValue() function in MagickCore/profile.c. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity.
xlsxio v0.1.2 to v0.2.34 was discovered to contain a free of uninitialized pointer in the xlsxioread_sheetlist_close() function. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Adobe Animate versions 22.0.9 (and earlier) and 23.0.1 (and earlier) are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
In multiple functions of cdm_engine.cpp, there is a possible use-after-free due to improper locking. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
In sdpu_build_uuid_seq of sdp_discovery.cc, there is a possible out of bounds write due to a use after free. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity.
.NET and Visual Studio Remote Code Execution Vulnerability. Rated high severity (CVSS 7.3), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows Hello Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows Media Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.0). This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows GDI Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Use after free in WebXR in Google Chrome prior to 114.0.5735.133 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in WebRTC in Google Chrome prior to 114.0.5735.133 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Autofill payments in Google Chrome prior to 114.0.5735.133 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A use after free issue was discovered in driver/firewire in outbound_phy_packet_callback in the Linux Kernel. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity.
NanoMQ 0.16.5 is vulnerable to heap-use-after-free in the nano_ctx_send function of nmq_mqtt.c. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A use-after-free flaw was found in r592_remove in drivers/memstick/host/r592.c in media access in the Linux Kernel. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
A use-after-free vulnerability exists in NanoMQ 0.17.2. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Apache Guacamole 0.9.10 through 1.5.1 may continue to reference a freed RDP audio input buffer. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
The affected application lacks proper validation of user-supplied data when parsing project files (e.g., CSP). Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
In vcu, there is a possible use after free due to a logic error. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
A use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer in a global object's debugger vector. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in <code>ScriptLoadContext</code>. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free after unwrapping the proxy. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in the Arm Mali GPU Kernel Driver. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A use after free flaw was found in hfsplus_put_super in fs/hfsplus/super.c in the Linux Kernel. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Use after free in PDF in Google Chrome prior to 114.0.5735.90 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in PDF in Google Chrome prior to 114.0.5735.90 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in PDF in Google Chrome prior to 114.0.5735.90 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Extensions in Google Chrome prior to 114.0.5735.90 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A heap use-after-free in the component CDataFileReader::GetItem of teeworlds v0.7.5 allows attackers to cause a Denial of Service (DoS) via a crafted map file. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An issue was discovered in the Linux kernel before 6.2.9. Rated medium severity (CVSS 4.7). This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
The Linux kernel 6.3 has a use-after-free in iopt_unmap_iova_range in drivers/iommu/iommufd/io_pagetable.c. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.
A use-after-free related to unsound inference in the bytecode generation when optimizations are enabled for Hermes prior to commit da8990f737ebb9d9810633502f65ed462b819c09 could have been used by an. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A bytecode optimization bug in Hermes prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could be used to cause an use-after-free and obtain arbitrary code execution via a carefully crafted. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A use-after-free in BigIntPrimitive addition in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by an attacker to leak raw data from Hermes VM’s heap. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A use-after-free flaw was found in reconn_set_ipaddr_from_hostname in fs/cifs/connect.c in the Linux kernel. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
A use-after-free flaw was found in xen_9pfs_front_removet in net/9p/trans_xen.c in Xen transport for 9pfs in the Linux Kernel. Rated medium severity (CVSS 4.7). No vendor patch available.
A flaw was found in the WebKitGTK package. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
yasm 1.3.0.55.g101bc was discovered to contain a heap-use-after-free via the function expand_mmac_params at yasm/modules/preprocs/nasm/nasm-pp.c. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Use after free in Guest View in Google Chrome prior to 113.0.5672.126 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in DevTools in Google Chrome prior to 113.0.5672.126 allowed a remote attacker who had compromised the renderer process to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Autofill UI in Google Chrome on Android prior to 113.0.5672.126 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use after free in Navigation in Google Chrome prior to 113.0.5672.126 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A malicious actor may convince a user to open a malicious USD file that may trigger a use-after-free vulnerability which could result in code execution. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in ChromeOS Camera in Google Chrome on ChromeOS prior to 113.0.5672.114 allowed a remote attacker who convinced a user to engage in specific UI interaction to potentially exploit heap. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Podofo v0.10.0 was discovered to contain a heap-use-after-free via the component PoDoFo::PdfEncrypt::IsMetadataEncrypted(). Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Windows OLE Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.