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Null Pointer Dereference

memory MEDIUM

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).

How It Works

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0). In normal operation, pointers should reference valid memory locations before use. When a pointer is NULL—either uninitialized, explicitly set to NULL, or returned as NULL from a failed allocation—and the program tries to read from, write to, or execute code at that address, the operating system intervenes. On modern systems, accessing address zero triggers a segmentation fault that immediately terminates the process.

Attackers exploit this by manipulating program logic to force null pointer conditions. Common techniques include triggering allocation failures in low-memory conditions, providing malformed input that bypasses initialization checks, or exploiting race conditions where a pointer is checked for NULL but becomes NULL before use. The attacker identifies code paths where null checks are missing or inadequate, then crafts inputs to reach those vulnerable states.

On legacy systems without memory protection, attackers could map their own code at address zero, converting a crash into arbitrary code execution. Modern operating systems prevent this through mmap_min_addr restrictions that prohibit mapping memory below a threshold (typically 64KB). This mitigation has largely relegated null pointer dereferences to denial-of-service attacks rather than remote code execution vectors.

Impact

  • Service disruption: Immediate process crash, taking down the vulnerable application or daemon
  • Availability attacks: Repeated crashes forcing system restarts or service downtime
  • Limited code execution: On unpatched legacy systems (pre-2009 Linux kernels, older embedded devices) where address zero mapping is possible
  • Privilege escalation: In kernel-mode drivers where null dereferences can be exploited to execute attacker code with system privileges

Real-World Examples

The Linux kernel suffered from CVE-2009-2908, where null pointer dereferences in various subsystems could be exploited on systems allowing mmap at address zero. Attackers could map malicious code at NULL and trigger kernel null dereferences to achieve privilege escalation. This prompted the introduction of mmap_min_addr protections.

Microsoft Windows drivers have been frequent targets, including CVE-2020-17087 in the Windows kernel cryptography driver. Attackers triggered null pointer dereferences in kernel mode, which on older Windows versions could be exploited for local privilege escalation by controlling the null page.

Web browsers have experienced denial-of-service through null dereferences when parsing malformed content. Firefox CVE-2019-11707 involved a null pointer dereference in the IonMonkey JIT compiler, allowing attackers to crash the browser with specially crafted JavaScript, though not achieve code execution due to modern protections.

Mitigation

  • Explicit null checks: Validate all pointers before dereferencing, especially after allocation or function calls that may return NULL
  • Static analysis tools: Deploy analyzers like Coverity, Clang Static Analyzer, or PVS-Studio to detect missing null checks during development
  • Address space layout: Enable mmap_min_addr kernel protection (standard on modern Linux, typically 65536 bytes)
  • Fuzzing: Use AFL, libFuzzer, or similar tools to stress-test error handling paths and allocation failures
  • Safe coding practices: Initialize pointers to NULL, use smart pointers in C++, adopt languages with built-in null safety
  • Runtime bounds checking: Enable AddressSanitizer during testing to catch null dereferences immediately

Recent CVEs (4366)

EPSS 1% CVSS 6.5
MEDIUM POC This Month

An issue was discovered in Bento4 through v1.6.0-636. 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.

Denial Of Service Null Pointer Dereference Bento4 +1
NVD GitHub
EPSS 1% CVSS 7.5
HIGH This Week

In CODESYS EtherNetIP before 4.1.0.0, specific EtherNet/IP requests may cause a null pointer dereference in the downloaded vulnerable EtherNet/IP stack that is executed by the CODESYS Control runtime. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Codesys +1
NVD
EPSS 1% CVSS 7.5
HIGH This Week

In CODESYS Gateway V3 before 3.5.17.10, there is a NULL Pointer Dereference. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Codesys +1
NVD
EPSS 2% CVSS 7.5
HIGH POC This Week

A NULL pointer dereference vulnerability exists on the ecobee3 lite 4.5.81.200 device in the HomeKit Wireless Access Control setup process. 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.

Denial Of Service Null Pointer Dereference Ecobee3 Lite Firmware +1
NVD
EPSS 2% CVSS 7.5
HIGH This Week

A NULL-pointer dereference in "Open" in avi.c of VideoLAN VLC Media Player 3.0.11 can a denial of service (DOS) in the application. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Vlc Media Player +1
NVD
EPSS 10% CVSS 7.5
HIGH PATCH This Week

ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Denial Of Service Null Pointer Dereference Debian +10
NVD GitHub
EPSS 2% CVSS 7.5
HIGH PATCH This Week

NULL Pointer Dereference in MELSEC-F Series FX3U-ENET firmware version 1.14 and prior, FX3U-ENET-L firmware version 1.14 and prior and FX3U-ENET-P502 firmware version 1.14 and prior allows a remote. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Denial Of Service Null Pointer Dereference Fx3U Enet Firmware +3
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

NVIDIA Windows GPU Display Driver for Windows contains a vulnerability in the NVIDIA kernel mode layer (nvlddmkm.sys) handler for DxgkDdiEscape where dereferencing a NULL pointer may lead to a system. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Microsoft +2
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the kernel mode layer (nvlddmkm.sys) handlers for all control calls with embedded parameters where dereferencing an. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Linux Null Pointer Dereference +5
NVD
EPSS 0% CVSS 4.4
MEDIUM PATCH This Month

NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where it can dereference a NULL pointer, which may lead to denial of service. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Nvidia +1
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where it can dereference a NULL pointer, which may lead to denial of service. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Nvidia +1
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

A component of the HarmonyOS 2.0 has a Null Pointer Dereference Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Harmonyos +1
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

A vulnerability has been identified in JT Utilities (All versions < V13.0.2.0). Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Siemens +1
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

A vulnerability has been identified in JT Utilities (All versions < V13.0.2.0). Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Siemens +1
NVD
EPSS 1% CVSS 7.5
HIGH PATCH This Week

An issue was discovered in ACRN before 2.5. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Acrn
NVD GitHub
EPSS 1% CVSS 7.5
HIGH PATCH This Week

ACRN before 2.5 has a devicemodel/hw/pci/xhci.c NULL Pointer Dereference for a trb pointer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Denial Of Service Null Pointer Dereference Acrn
NVD GitHub
EPSS 1% CVSS 7.5
HIGH PATCH This Week

ACRN before 2.5 has a hw/pci/virtio/virtio.c vq_endchains NULL Pointer Dereference. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Denial Of Service Null Pointer Dereference Acrn
NVD GitHub
EPSS 1% CVSS 7.5
HIGH This Week

In RenderStruct of protostream_objectsource.cc, there is a possible crash due to a missing null check. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Google Null Pointer Dereference +1
NVD
EPSS 1% CVSS 6.5
MEDIUM This Month

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Linux Security whereby the FSAVD component used in certain F-Secure products can crash while scanning larger packages/fuzzed files. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Endpoint Protection +4
NVD
EPSS 51% CVSS 7.5
HIGH PATCH This Week

Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Apache Null Pointer Dereference +9
NVD
EPSS 1% CVSS 5.5
MEDIUM POC This Month

A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed 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.

Denial Of Service Null Pointer Dereference Debian +3
NVD GitHub
EPSS 3% CVSS 7.5
HIGH POC PATCH This Week

OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header field. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Fedora +3
NVD GitHub
EPSS 65% CVSS 7.5
HIGH This Week

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Apache Null Pointer Dereference +9
NVD
EPSS 2% CVSS 7.5
HIGH This Week

SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL -. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference SAP +1
NVD
EPSS 2% CVSS 7.5
HIGH This Week

SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL -. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference SAP +1
NVD
EPSS 2% CVSS 7.5
HIGH This Week

SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL -. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference SAP +1
NVD
EPSS 2% CVSS 7.5
HIGH This Week

SAP NetWeaver ABAP Server and ABAP Platform (Dispatcher), versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73,. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference SAP +1
NVD
EPSS 1% CVSS 6.5
MEDIUM This Month

When using a sync_repl client in 389-ds-base, an authenticated attacker can cause a NULL pointer dereference using a specially crafted query, causing a crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Red Hat +1
NVD GitHub
EPSS 1% CVSS 7.8
HIGH POC PATCH This Week

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

RCE Denial Of Service Null Pointer Dereference +5
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM POC PATCH This Month

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Debian +2
NVD
EPSS 1% CVSS 7.5
HIGH This Week

Type Confusion in 802154 ACK Frames Handling. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Zephyr +1
NVD GitHub
EPSS 2% CVSS 7.5
HIGH This Week

An issue was discovered in Envoy through 1.71.1. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Envoy +1
NVD GitHub
EPSS 2% CVSS 7.5
HIGH PATCH This Week

A flaw was found in slapi-nis in versions before 0.56.7. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Fedora +2
NVD
EPSS 1% CVSS 6.5
MEDIUM POC This Month

A null pointer deference issue exists in GNU LibreDWG 0.10 via read_2004_compressed_section ../../src/decode.c:2337. 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.

Denial Of Service Null Pointer Dereference Libredwg +1
NVD GitHub VulDB
EPSS 1% CVSS 6.5
MEDIUM POC This Month

A null pointer deference issue exists in GNU LibreDWG 0.10 via get_bmp ../../programs/dwgbmp.c:164. 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.

Denial Of Service Null Pointer Dereference Libredwg +1
NVD GitHub VulDB
EPSS 1% CVSS 6.5
MEDIUM POC This Month

A null pointer dereference issue exists in GNU LibreDWG 0.10.2641 via htmlescape ../../programs/escape.c:29. 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.

Denial Of Service Null Pointer Dereference Libredwg +1
NVD GitHub VulDB
EPSS 1% CVSS 6.5
MEDIUM POC This Month

A null pointer deference issue exists in GNU LibreDWG 0.10.2641 via output_TEXT ../../programs/dwg2SVG.c:114, which causes a denial of service (application crash). 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.

Denial Of Service Null Pointer Dereference Libredwg +1
NVD GitHub VulDB
EPSS 4% CVSS 5.9
MEDIUM PATCH This Month

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Debian +24
NVD
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Buffer Overflow Denial Of Service Google +2
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC PATCH This Month

TensorFlow is an end-to-end open source platform for machine learning. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Python Google +2
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC PATCH This Month

TensorFlow is an end-to-end open source platform for machine learning. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC PATCH This Month

TensorFlow is an end-to-end open source platform for machine learning. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC PATCH This Month

TensorFlow is an end-to-end open source platform for machine learning. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC PATCH This Month

TensorFlow is an end-to-end open source platform for machine learning. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Google Null Pointer Dereference +1
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

TensorFlow is an end-to-end open source platform for machine learning. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Denial Of Service Python Google +2
NVD GitHub
EPSS 1% CVSS 7.5
HIGH This Week

An attacker may cause a Denial of Service (DoS) in multiple versions of Teradici PCoIP Agent via a null pointer dereference. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Pcoip Agent +1
NVD
EPSS 1% CVSS 7.5
HIGH PATCH This Week

A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Denial Of Service Null Pointer Dereference Exosip2
NVD
EPSS 1% CVSS 7.5
HIGH This Week

Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to cause a denial of service due to a NULL pointer dereference via. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Vport 06Ec 2V26M Firmware +16
NVD
EPSS 0% CVSS 7.5
HIGH This Week

CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Codesys +11
NVD VulDB
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

samurai 1.2 has a NULL pointer dereference in printstatus() function in build.c via a crafted build file. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Samurai +1
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

samurai 1.2 has a NULL pointer dereference in writefile() in util.c via a crafted build file. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Samurai +1
NVD GitHub
EPSS 2% CVSS 7.5
HIGH POC This Week

Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. 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.

Denial Of Service Null Pointer Dereference Service Provider +1
NVD
EPSS 1% CVSS 8.6
HIGH This Week

A NULL Pointer Dereference vulnerability in the Captive Portal Content Delivery (CPCD) services daemon (cpcd) of Juniper Networks Junos OS on MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC allows. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Juniper +1
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

NVIDIA Windows GPU Display Driver for Windows, all versions, contains a vulnerability in the kernel driver (nvlddmkm.sys) where a NULL pointer dereference may lead to system crash. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Microsoft +2
NVD
EPSS 0% CVSS 7.3
HIGH This Week

NVIDIA Windows GPU Display Driver for Windows, all versions, contains a vulnerability in the kernel mode layer (nvlddmkm.sys) handler for DxgkDdiEscape where the program dereferences a pointer that. Rated high severity (CVSS 7.3), this vulnerability is low attack complexity. No vendor patch available.

RCE Denial Of Service Null Pointer Dereference +3
NVD
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

In filters/reframe_latm.c in GPAC 1.0.1 there is a Null Pointer Dereference, when gf_filter_pck_get_data is called. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Gpac
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

There is a Null Pointer Dereference in function filter_core/filter_pck.c:gf_filter_pck_new_alloc_internal in GPAC 1.0.1. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Gpac
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

The AV1_DuplicateConfig function in GPAC 1.0.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted file in the MP4Box command. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Gpac
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

The MergeTrack function in GPAC 1.0.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted file in the MP4Box command. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Gpac
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

The gf_isom_cenc_get_default_info_internal function in GPAC 1.0.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted file in the MP4Box command. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Gpac
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

The gf_isom_set_extraction_slc function in GPAC 1.0.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted file in the MP4Box command. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Gpac
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

The HintFile function in GPAC 1.0.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted file in the MP4Box command. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Gpac
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM This Month

The user may be tricked into opening a malicious FBX file which may exploit a Null Pointer Dereference vulnerability in FBX's Review version 1.5.0 and prior causing the application to crash leading. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Fbx Review +1
NVD
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

In Deark before 1.5.8, a specially crafted input file can cause a NULL pointer dereference in the dbuf_write function (src/deark-dbuf.c). Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Deark +1
NVD GitHub
EPSS 2% CVSS 9.8
CRITICAL POC Act Now

NULL Pointer Dereference in the "isomedia/track.c" module's "MergeTrack()" function of GPAC v0.5.2 allows attackers to execute arbitrary code or cause a Denial-of-Service (DoS) by uploading a. 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.

RCE Denial Of Service Null Pointer Dereference +1
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Fedora +3
NVD GitHub
EPSS 0% CVSS 4.4
MEDIUM This Month

A null pointer dereference vulnerability in Lenovo Power Management Driver for Windows 10, prior to version 1.67.17.54, that could cause systems to experience a blue screen error. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Microsoft +2
NVD
EPSS 1% CVSS 6.5
MEDIUM POC This Month

An issue was discovered in libezxml.a in ezXML 0.8.6. 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.

Denial Of Service Null Pointer Dereference Debian +3
NVD
EPSS 1% CVSS 6.5
MEDIUM PATCH This Month

In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.

Denial Of Service Null Pointer Dereference Mosquitto +1
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

An issue was discovered in the Linux kernel through 5.11.11. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Linux Null Pointer Dereference +3
NVD
EPSS 2% CVSS 5.3
MEDIUM PATCH This Month

A flaw was found in OpenEXR in versions before 3.0.0-beta. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Debian +2
NVD
EPSS 2% CVSS 7.5
HIGH POC PATCH This Week

Zetetic SQLCipher 4.x before 4.4.3 has a NULL pointer dereferencing issue related to sqlcipher_export in crypto.c and sqlite3StrICmp in sqlite3.c. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Denial Of Service SQLi Null Pointer Dereference +1
NVD GitHub
EPSS 1% CVSS 5.5
MEDIUM PATCH This Month

A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.26 handled component references in CDEF box in the JP2 image format decoder. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity.

Denial Of Service Null Pointer Dereference Fedora +3
NVD
EPSS 1% CVSS 5.5
MEDIUM POC This Month

A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.27 handled component references in the JP2 image format decoder. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Null Pointer Dereference Red Hat +5
NVD
EPSS 2% CVSS 7.5
HIGH PATCH This Week

A flaw was found in Privoxy in versions before 3.0.29. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Privoxy
NVD
EPSS 63% CVSS 5.9
MEDIUM PATCH This Month

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Node.js +115
NVD
EPSS 1% CVSS 7.8
HIGH This Week

FastStone Image Viewer <= 7.5 is affected by a user mode write access violation near NULL at 0x005bdfc9, triggered when a user opens or views a malformed CUR file that is mishandled by FSViewer.exe. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RCE Denial Of Service Null Pointer Dereference +2
NVD
EPSS 1% CVSS 7.5
HIGH This Week

Varnish varnish-modules before 0.17.1 allows remote attackers to cause a denial of service (daemon restart) in some configurations. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Fedora +4
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 (All versions). Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Siemens +1
NVD
EPSS 1% CVSS 7.5
HIGH This Week

An issue was discovered in Storage Performance Development Kit (SPDK) before 20.01.01. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Storage Performance Development Kit +1
NVD GitHub
EPSS 1% CVSS 7.5
HIGH PATCH This Week

An issue was discovered in the fltk crate before 0.15.3 for Rust. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Fltk +1
NVD
EPSS 1% CVSS 7.5
HIGH PATCH This Week

An issue was discovered in the fltk crate before 0.15.3 for Rust. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Null Pointer Dereference Fltk +1
NVD
EPSS 2% CVSS 7.5
HIGH PATCH This Week

A flaw was found in privoxy before 3.0.32. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

Denial Of Service Null Pointer Dereference Privoxy
NVD
EPSS 1% CVSS 5.5
MEDIUM POC PATCH This Month

A flaw was found in jasper before 2.0.25. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Denial Of Service Null Pointer Dereference Fedora +3
NVD GitHub
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Quick Facts

Typical Severity
MEDIUM
Category
memory
Total CVEs
4366

Related CWEs

MITRE ATT&CK

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