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CWE-476

5,440 CVEs • Abstraction: Base • Likelihood of Exploit: Medium

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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CVEs (5,440)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Google
1Android
Jun 17, 2026
Sep 9, 2021
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
NULL pointer dereference vulnerability in ION driver prior to SMR Sep-2021 Release 1 allows attackers to cause memory corruption.
1Qualcomm
41Qca6174a Firmware
Qca6574 FirmwareQca6574a Firmware+38 more
Jun 17, 2026
Sep 9, 2021
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
Potential null pointer dereference in KGSL GPU auxiliary command due to improper validation of user input in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
1Qualcomm
41Qca6174a Firmware
Qca6574 FirmwareQca6574a Firmware+38 more
Jun 17, 2026
Sep 9, 2021
N/A· v4
7.0 HIGH· v3
4.4 MEDIUM· v2
Possible null pointer dereference due to race condition between timeline fence signal and time line fence destroy in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
1Qualcomm
98Apq8017 Firmware
Apq8053 FirmwareAqt1000 Firmware+95 more
Jun 17, 2026
Sep 9, 2021
N/A· v4
9.8 CRITICAL· v3
10.0 HIGH· v2
Null Pointer Dereference may occur due to improper validation while processing crafted SDP body in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdra...Show more
Null Pointer Dereference may occur due to improper validation while processing crafted SDP body in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon MobileShow less
1Qualcomm
176Apq8009 Firmware
Apq8017 FirmwareApq8037 Firmware+173 more
Jun 17, 2026
Sep 9, 2021
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
Possible null pointer dereference due to lack of validation check for passed pointer during key import in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT,...Show more
Possible null pointer dereference due to lack of validation check for passed pointer during key import in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Voice & Music, Snapdragon WearablesShow less
1Cisco
1Ios Xr
Jun 17, 2026
Sep 9, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service (DoS) condi...Show more
A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service (DoS) condition. This vulnerability exists because certain DHCPv4 messages are improperly validated when they are processed by an affected device. An attacker could exploit this vulnerability by sending a malformed DHCPv4 message to an affected device. A successful exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the dhcpd process. While the dhcpd process is restarting, which may take up to approximately two minutes, DHCPv4 server services are unavailable on the affected device. This could temporarily prevent network access to clients that join the network during that time period. Note: Only the dhcpd process crashes and eventually restarts automatically. The router does not reload.Show less
1Apple
4Ipados
Iphone OsMacos+1 more
Jun 17, 2026
Sep 8, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A null pointer dereference was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, Safari 14.1.1, iOS 14.6 and iPadOS 14.6. A remote attacker may be able to cause a denial of service.
2Fedoraproject
Lcdf
2Fedora
Gifsicle
Jun 17, 2026
Sep 7, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
The find_color_or_error function in gifsicle 1.92 contains a NULL pointer dereference.
4Debian
FedoraprojectRedhat+1 more
4Debian Linux
Enterprise LinuxFedora+1 more
Jun 17, 2026
Sep 7, 2021
N/A· v4
7.8 HIGH· v3
6.9 MEDIUM· v2
A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G < 2021.8.22.
1Schneider Electric
49Modicon M340 Bmxp341000
Modicon M340 Bmxp342010Modicon M340 Bmxp342020+46 more
Jun 17, 2026
Sep 2, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A CWE-476: NULL Pointer Dereference vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Mo...Show more
A CWE-476: NULL Pointer Dereference vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Modicon M580 CPU (part numbers BMEP* and BMEH*, all versions), Modicon M340 CPU (part numbers BMXP34*, all versions), Modicon MC80 (part numbers BMKC80*, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU*, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU*, all versions), Modicon Premium CPU (part numbers TSXP5*, all versions).Show less
1Adobe
1After Effects
Jun 17, 2026
Aug 24, 2021
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
Adobe After Effects version 18.2 (and earlier) is affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an ap...Show more
Adobe After Effects version 18.2 (and earlier) is affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
1Iec104 Project
1Iec104
Jun 17, 2026
Aug 23, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).
1Iec104 Project
1Iec104
Jun 17, 2026
Aug 23, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A segmentation violation in the Iec104_Deal_I function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).
5Debian
FedoraprojectMit+2 more
5Communications Cloud Native Core Network Slice Selection Function
Debian LinuxFedora+2 more
Jun 17, 2026
Aug 23, 2021
N/A· v4
6.5 MEDIUM· v3
4.0 MEDIUM· v2
The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field.
1Adobe
2Acrobat Dc
Acrobat Reader Dc
Jun 17, 2026
Aug 20, 2021
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage...Show more
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
1Adobe
2Acrobat Dc
Acrobat Reader Dc
Jun 17, 2026
Aug 20, 2021
N/A· v4
6.5 MEDIUM· v3
4.0 MEDIUM· v2
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Null pointer dereference vulnerability. An authenticated attacker could leverage th...Show more
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Null pointer dereference vulnerability. An authenticated attacker could leverage this vulnerability achieve an application denial-of-service in the context of the current user. Exploitation of this issue does not requires user interaction.Show less
1Axiosys
1Bento4
Jun 17, 2026
Aug 17, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Bento4 version 06c39d9. A NULL pointer dereference exists in the AP4_DescriptorListWriter::Action component located in /Core/Ap4Descriptor.h. It allows an attacker to cause a denial of service...Show more
An issue was discovered in Bento4 version 06c39d9. A NULL pointer dereference exists in the AP4_DescriptorListWriter::Action component located in /Core/Ap4Descriptor.h. It allows an attacker to cause a denial of service (DOS).Show less
1Axiosys
1Bento4
Jun 17, 2026
Aug 17, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Bento4 version 06c39d9. A NULL pointer dereference exists in the AP4_Stz2Atom::GetSampleSize component located in /Core/Ap4Stz2Atom.cpp. It allows an attacker to cause a denial of service (DOS)...Show more
An issue was discovered in Bento4 version 06c39d9. A NULL pointer dereference exists in the AP4_Stz2Atom::GetSampleSize component located in /Core/Ap4Stz2Atom.cpp. It allows an attacker to cause a denial of service (DOS).Show less
1Google
1Tensorflow
Jun 17, 2026
Aug 12, 2021
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can craft a TFLite model that would trigger a null pointer dereference, which would result in a crash and denial of...Show more
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can craft a TFLite model that would trigger a null pointer dereference, which would result in a crash and denial of service. This is caused by the MLIR optimization of `L2NormalizeReduceAxis` operator. The [implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/compiler/mlir/lite/transforms/optimize.cc#L67-L70) unconditionally dereferences a pointer to an iterator to a vector without checking that the vector has elements. We have patched the issue in GitHub commit d6b57f461b39fd1aa8c1b870f1b974aac3554955. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.Show less
1Google
1Tensorflow
Jun 17, 2026
Aug 12, 2021
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can craft a TFLite model that would trigger a null pointer dereference, which would result in a crash and denial of...Show more
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can craft a TFLite model that would trigger a null pointer dereference, which would result in a crash and denial of service. The [implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/internal/optimized/optimized_ops.h#L268-L285) unconditionally dereferences a pointer. We have patched the issue in GitHub commit 15691e456c7dc9bd6be203b09765b063bf4a380c. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.Show less