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Use After Free

memory HIGH

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 (6143)

EPSS 1% CVSS 7.8
HIGH This Week

A UrlfWTPPagePtr KERedirect Use-After-Free Privilege Escalation vulnerability in Trend Micro Antivirus for Mac (Consumer) 7.0 (2017) and above could allow a local attacker to escalate privileges on. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

Privilege Escalation Memory Corruption Use After Free +4
NVD
EPSS 3% CVSS 9.8
CRITICAL Act Now

A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by JavaScript code that is providing payload values to be stored. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Mozilla Memory Corruption Denial Of Service +11
NVD
EPSS 3% CVSS 9.8
CRITICAL Act Now

A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances during shutdown when the timer is deleted while still in use. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Mozilla Memory Corruption Denial Of Service +11
NVD
EPSS 3% CVSS 8.8
HIGH This Week

A use-after-free vulnerability can occur when script uses mutation events to move DOM nodes between documents, resulting in the old document that held the node being freed but the node still having a. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Mozilla Memory Corruption Denial Of Service +12
NVD
EPSS 3% CVSS 8.8
HIGH This Week

A use-after-free vulnerability can occur when deleting an input element during a mutation event handler triggered by focusing that element. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Mozilla Memory Corruption Denial Of Service +12
NVD
EPSS 8% CVSS 9.8
CRITICAL Act Now

Adobe Digital Editions versions 4.5.8 and below have an use after free vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Adobe RCE Use After Free +3
NVD
EPSS 2% CVSS 9.8
CRITICAL PATCH Act Now

A use-after-free was discovered in the tcpbridge binary of Tcpreplay 4.3.0 beta1. 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.

Memory Corruption Denial Of Service Use After Free +2
NVD GitHub
EPSS 5% CVSS 7.8
HIGH PATCH This Week

Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.

Adobe RCE Use After Free +4
NVD
EPSS 5% CVSS 7.8
HIGH PATCH This Week

Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.

Adobe RCE Use After Free +4
NVD
EPSS 5% CVSS 7.8
HIGH PATCH This Week

Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.

Adobe RCE Use After Free +4
NVD
EPSS 17% CVSS 7.8
HIGH PATCH This Week

Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.

Adobe RCE Use After Free +4
NVD
EPSS 5% CVSS 7.8
HIGH This Week

Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Adobe RCE Use After Free +4
NVD
EPSS 5% CVSS 7.8
HIGH This Week

Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Adobe RCE Use After Free +4
NVD
EPSS 5% CVSS 7.8
HIGH This Week

Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Adobe RCE Use After Free +4
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader, version 9.2.0.9297. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.2.0.9297. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader, version 9.2.0.9297. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 2% CVSS 8.8
HIGH POC This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. 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.

Memory Corruption Information Disclosure Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3, a different vulnerability than CVE-2018-16291, CVE-2018-16292,. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3, a different vulnerability than CVE-2018-16291, CVE-2018-16292,. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3, a different vulnerability than CVE-2018-16291, CVE-2018-16292,. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3, a different vulnerability than CVE-2018-16291, CVE-2018-16292,. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3, a different vulnerability than CVE-2018-16291, CVE-2018-16292,. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3, a different vulnerability than CVE-2018-16291, CVE-2018-16293,. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3, a different vulnerability than CVE-2018-16292, CVE-2018-16293,. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 4% CVSS 8.1
HIGH PATCH This Week

Python Cryptographic Authority pyopenssl version prior to version 17.5.0 contains a CWE-416: Use After Free vulnerability in X509 object handling that can result in Use after free can lead to. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required.

RCE Use After Free Python +8
NVD GitHub
EPSS 3% CVSS 8.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.2.0.9297. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.2.0.9297. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.2.0.9297. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 6% CVSS 7.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 6% CVSS 7.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 6% CVSS 7.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 9% CVSS 7.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader version 9.1.0.5096. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 2% CVSS 7.3
HIGH PATCH This Week

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. 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.

Memory Corruption Information Disclosure Use After Free +2
NVD
EPSS 2% CVSS 7.8
HIGH PATCH This Week

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. 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.

Memory Corruption Information Disclosure Use After Free +2
NVD
EPSS 2% CVSS 7.8
HIGH PATCH This Week

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. 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.

Memory Corruption Information Disclosure Use After Free +2
NVD
EPSS 2% CVSS 7.8
HIGH PATCH This Week

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. 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.

Memory Corruption Information Disclosure Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. 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.

Memory Corruption Information Disclosure Use After Free +2
NVD
EPSS 3% CVSS 7.8
HIGH PATCH This Week

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. 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.

Memory Corruption Information Disclosure Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 0% CVSS 7.8
HIGH This Week

In sdcardfs_open of file.c, there is a possible Use After Free due to an unusual root cause. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

Use After Free Privilege Escalation Denial Of Service +3
NVD
EPSS 2% CVSS 9.8
CRITICAL PATCH Act Now

In avrc_pars_browsing_cmd of avrc_pars_tg.cc, there is a possible use-after-free due to improper locking. 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.

Google Memory Corruption Use After Free +2
NVD
EPSS 3% CVSS 9.8
CRITICAL PATCH Act Now

Foxit PhantomPDF and Reader before 9.3 allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) because properties of Annotation objects are mishandled. 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.

Memory Corruption RCE Use After Free +3
NVD
EPSS 3% CVSS 9.8
CRITICAL PATCH Act Now

Foxit PhantomPDF and Reader before 9.3 allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) because properties of Annotation objects are mishandled. 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.

Memory Corruption RCE Use After Free +3
NVD
EPSS 3% CVSS 9.8
CRITICAL PATCH Act Now

Foxit PhantomPDF and Reader before 9.3 allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) because properties of Annotation objects are mishandled. 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.

Memory Corruption RCE Use After Free +3
NVD
EPSS 3% CVSS 9.8
CRITICAL PATCH Act Now

Foxit PhantomPDF and Reader before 9.3 allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) because properties of Annotation objects are mishandled. 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.

Memory Corruption RCE Use After Free +3
NVD
EPSS 3% CVSS 9.8
CRITICAL PATCH Act Now

Foxit PhantomPDF and Reader before 9.3 allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) because properties of Annotation objects are mishandled. 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.

Memory Corruption RCE Use After Free +3
NVD
EPSS 3% CVSS 9.8
CRITICAL Act Now

Fuji Electric V-Server 4.0.3.0 and prior, A use after free vulnerability has been identified, which may allow remote code execution. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 1% CVSS 8.8
HIGH This Week

Use after free in WebUI in Google Chrome prior to 64.0.3282.119 allowed a remote attacker to potentially exploit heap corruption via a crafted Chrome Extension. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Google Memory Corruption Denial Of Service +6
NVD
EPSS 2% CVSS 8.8
HIGH This Week

Use after free in PDFium in Google Chrome prior to 64.0.3282.119 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.

Google Memory Corruption Denial Of Service +6
NVD
EPSS 2% CVSS 8.8
HIGH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samsung Internet Browser Fixed in version 6.4.0.15. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 1% CVSS 6.5
MEDIUM POC This Month

The function MP4Free() in mp4property.cpp in libmp4v2 2.1.0 internally calls free() on a invalid pointer, raising a SIGABRT signal. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Memory Corruption Information Disclosure Use After Free +1
NVD GitHub
EPSS 3% CVSS 7.8
HIGH POC PATCH This Week

An issue was discovered in the Linux kernel through 4.18.8. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Memory Corruption Linux Use After Free +6
NVD GitHub Exploit-DB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In all android releases (Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, lack fo check on return value in WMA response handler can lead to potential use after free. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

Use After Free Denial Of Service Linux +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In all android releases (Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, callback executed from the other thread has freed memory which is also used in wlan. 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 Denial Of Service Linux +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In all android releases (Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, while accessing global variable "debug_client" in multi-thread manner, Use after free issue. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

Use After Free Denial Of Service Linux +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

In all android releases (Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, while calling IPA_IOC_MDFY_RT_RULE IPA IOCTL, header entry is not checked before use. 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 Denial Of Service Linux +4
NVD
EPSS 0% CVSS 7.0
HIGH PATCH This Week

A flaw was found in the Linux Kernel where an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest. 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.

Memory Corruption Linux Information Disclosure +4
NVD
EPSS 1% CVSS 5.5
MEDIUM PATCH This Month

In Artifex Ghostscript before 9.24, attackers able to supply crafted PostScript files could use incorrect free logic in pagedevice replacement to crash the interpreter. 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.

Memory Corruption Denial Of Service Use After Free +9
NVD
EPSS 2% CVSS 7.8
HIGH PATCH This Week

In Artifex Ghostscript before 9.24, attackers able to supply crafted PostScript files to the builtin PDF14 converter could use a use-after-free in copydevice handling to crash the interpreter or. 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.

Memory Corruption Denial Of Service Use After Free +11
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object. 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.

Memory Corruption Linux Denial Of Service +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

A flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. 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.

Memory Corruption Linux Denial Of Service +2
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

An invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other. 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.

Memory Corruption Denial Of Service Use After Free +3
NVD GitHub
EPSS 1% CVSS 7.8
HIGH PATCH This Week

It was found that the raw midi kernel driver does not protect against concurrent access which leads to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(). 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.

Memory Corruption Use After Free Privilege Escalation +6
NVD VulDB
EPSS 2% CVSS 9.8
CRITICAL POC Act Now

Dave Gamble cJSON version 1.7.3 and earlier contains a CWE-416: Use After Free vulnerability in cJSON library that can result in Possible crash, corruption of data or even RCE. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Memory Corruption Denial Of Service Use After Free +1
NVD GitHub
EPSS 68% CVSS 7.5
HIGH POC PATCH THREAT This Week

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD Exploit-DB
EPSS 1% CVSS 7.8
HIGH This Week

The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 2% CVSS 8.8
HIGH POC PATCH This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 44% CVSS 7.8
HIGH POC THREAT This Week

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.5096. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.1.0.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.1.0.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
EPSS 3% CVSS 8.8
HIGH PATCH This Week

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. 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.

Memory Corruption RCE Use After Free +2
NVD
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Quick Facts

Typical Severity
HIGH
Category
memory
Total CVEs
6143

Related CWEs

MITRE ATT&CK

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