Weakness (CWE)
CWE-476: NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
How to prevent it (5 mitigations)
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Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
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Requirements
Select a programming language that is not susceptible to these issues.
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Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
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Architecture and Design
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
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Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
Source: MITRE CWE-476
1,548 results · Clear filters · Feed
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Medium 5.3
Free5GC pfcp_reports.go identityTriggerType null pointer dereference
A security flaw has been discovered in Free5GC up to 4.1.0. This impacts the function identityTriggerType of the file pfcp_reports.go. The manipulation results in null pointer dereference. The attack can be executed remotely. The exploit has been released to …
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Medium 5.3
Free5GC SMF establishPfcpSession null pointer dereference
A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been pub…
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Medium 6.5
NanoMQ $share/ Subscription Validation and Forwarding Parsing Inconsistency: NULL Pointer Increment Causes Crash
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In version 0.24.6, NanoMQ has a protocol parsing / forwarding inconsistency when handling shared subscriptions ($share/). A malformed SUBSCRIBE topic such as $share/ab (missing the second /…
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Medium 5.3
Free5GC pcf smpolicy.go HandleCreateSmPolicyRequest null pointer dereference
A vulnerability has been found in Free5GC pcf up to 1.4.1. This affects the function HandleCreateSmPolicyRequest of the file internal/sbi/processor/smpolicy.go. The manipulation leads to null pointer dereference. The attack is possible to be carried out remot…
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Medium 5.3
Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereference
A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest of the file internal/pfcp/handler/handler.go of the component PFCP UDP Endpoint. Executing a manipulation can lead to null pointer dereference. The …
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Medium 6.5
Denial-of-Service in Content Distribution Service
A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an attacker on the adjacent network to cause the NomadBranch.exe process to terminate via crafted requests. This…
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Medium 5.5
NVIDIA HD Audio Driver for Windows contains a vulnerability where an attacker could exploit a NULL pointer dereference …
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Medium 6.5
A segmentation violation in the oneflow.logical_or component of OneFlow v0.9.0 allows attackers to cause a Denial of Se…
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Medium 5.9
NULL dereference in SSL_CIPHER_find() function on unknown cipher ID
Issue summary: If an application using the SSL_CIPHER_find() function in a QUIC protocol client or server receives an unknown cipher suite from the peer, a NULL dereference occurs. Impact summary: A NULL pointer dereference leads to abnormal termination of th…
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Medium 6.1CVE-2025-11187 Public exploit
Improper validation of PBMAC1 parameters in PKCS#12 MAC verification
Issue summary: PBMAC1 parameters in PKCS#12 files are missing validation which can trigger a stack-based buffer overflow, invalid pointer or NULL pointer dereference during MAC verification. Impact summary: The stack buffer overflow or NULL pointer dereferenc…
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Medium 6.7
Mishandles certain out-of-memory conditions in visualfc/liteide via liteidex/src/3rdparty/libvterm/src module
NULL Pointer Dereference vulnerability in visualfc liteide (liteidex/src/3rdparty/libvterm/src modules). This vulnerability is associated with program files screen.C, state.C, vterm.C. This issue affects liteide: before x38.4.
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Medium 5.3
Rekor COSE v0.0.1 Canonicalize crashes when passed empty Message
Rekor is a software supply chain transparency log. In versions 1.4.3 and below, the entry implementation can panic on attacker-controlled input when canonicalizing a proposed entry with an empty spec.message, causing nil Pointer Dereference. Function validate…
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Medium 6.5
ImageMagick has a NULL pointer dereference in MSL parser via <comment> tag before image load
ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images …
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Medium 5.5
Junos OS: A specifically crafted 'show chassis' command causes chassisd to crash
A NULL Pointer Dereference vulnerability in the chassis daemon (chassisd) of Juniper Networks Junos OS on MX, SRX and EX Series allows a local attacker with low privileges to cause a Denial-of-Service (DoS). When a user executes the 'show chassis' command wit…
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Medium 5.5
Substance3D - Modeler | NULL Pointer Dereference (CWE-476)
Substance3D - Modeler versions 1.22.4 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to application denial-of-service. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
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Medium 5.5
Substance3D - Modeler | NULL Pointer Dereference (CWE-476)
Substance3D - Modeler versions 1.22.4 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to application denial-of-service. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
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Medium 5.5
Illustrator | NULL Pointer Dereference (CWE-476)
Illustrator versions 29.8.3, 30.0 and earlier are affected by a NULL Pointer Dereference vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to crash the application, causing disruption to services. Exp…
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Medium 6.2
Vulnerability in the QNX Neutrino Kernel impacts the QNX Software Development Platform and QNX OS for Safety
Null pointer dereference in the MsgRegisterEvent() system call could allow an attacker with local access and code execution abilities to crash the QNX Neutrino kernel.
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Medium 5.3
Null Pointer Dereference in SubtableUnicodesCache::create leading to DoS
HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using pl…
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Medium 5.3
TOTOLINK WA1200 HTTP Request cstecgi.cgi null pointer dereference
A vulnerability has been found in TOTOLINK WA1200 5.9c.2914. The impacted element is an unknown function of the file cstecgi.cgi of the component HTTP Request Handler. The manipulation leads to null pointer dereference. The attack is possible to be carried ou…
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Medium 5.4
iccDEV has Type Confusion in CIccTag:IsTypeCompressed()
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a Type Confusion vulnerability in `CIccTag:IsTypeCompr…
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Medium 6.5
iccDEV has Type Confusion in CIccProfileXml::ParseBasic() at IccXML/IccLibXML/IccProfileXml.cpp
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a Type Confusion vulnerability in `CIccProfileXml::Par…
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Medium 6.5
iccDEV has Null Pointer Dereference in CIccProfile::CheckTagTypes()
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a NULL pointer dereference vulnerability. This vulnera…
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Medium 5.5
iccDEV is Vulnerable to Null Pointer Dereference in CIccProfileXml::ParseBasic() Leading to Denial of Service
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to Null pointer dereference in CIccProfileXml::ParseBasic(), leading to…
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Medium 6.1
iccDEV has Undefined Behavior - Null Pointer Passed to memcpy() in CIccTagSparseMatrixArray
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV has undefined behavior due to a null pointer passed to memcpy() in CIccTagSparseMatri…
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Medium 5.5
NULL Pointer Dereference in iccDEV XML Tag Parser
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to NULL pointer dereference via the XML tag parser. This issue has been…
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Medium 5.5
NULL Pointer Dereference in iccDEV XML Parser
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to NULL pointer dereference via the XML parser. This issue has been pat…
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Medium 5.5
NULL Pointer Dereference in iccDEV XML Calculator Parser
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to NULL pointer dereference via the XML calculator parser. This issue h…
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Medium 5.5
NULL Pointer Dereference in iccDEV Signature Parser
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to NULL pointer dereference via the signature parser. This issue has be…
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Medium 5.5
NULL Pointer Dereference in iccDEV Unknown Tag Parser
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to NULL pointer dereference via an unknown tag parser. This issue has b…
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Medium 5.5
iccDEV ToneMap Writer has NULL Pointer Member Call
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a NULL pointer member call vulnerability. This vulnera…
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Medium 6.5
In Modem, there is a possible system crash due to incorrect error handling. This could lead to remote denial of service…
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Medium 4.3
omec-project UPF PFCP Session Establishment Request messages_session.go handleSessionEstablishmentRequest null pointer dereference
A flaw has been found in omec-project UPF up to 2.1.3-dev. This affects the function handleSessionEstablishmentRequest of the file /pfcpiface/pfcpiface/messages_session.go of the component PFCP Session Establishment Request Handler. This manipulation causes n…
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Medium 6.2
The Cordova plugin cordova-plugin-x-socialsharing (SocialSharing-PhoneGap-Plugin) for Android 6.0.4, registers an expor…
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Medium 6.5
NULL-pointer dereference vulnerabilities in Aqara Hub M2 4.3.6_0027, Hub M3 4.3.6_0025, and Camera Hub G3 4.1.9_0027 in…
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Medium 6.5
DirectX Graphics Kernel Denial of Service Vulnerability
Null pointer dereference in Windows DirectX allows an authorized attacker to deny service locally.
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Medium 6.5
DirectX Graphics Kernel Denial of Service Vulnerability
Null pointer dereference in Windows DirectX allows an authorized attacker to deny service locally.
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Medium 6.5
A NULL pointer dereference vulnerability in the importDataObject() function of PDF-XChange Editor v10.7.3.401 allows at…
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Medium 6.5
A NULL pointer dereference vulnerability in the util.readFileIntoStream component of PDF-XChange Editor v10.7.3.401 all…
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Medium 6.9
Null-pointer dereference in python-apt TagSection.keys()
NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cause a denial of service (process crash) via a crafted deb822 file with a malformed non-UTF-8 key.