CWE-476— NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.— MITRE CWE catalog
5,944 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-476page 6 of 119
- CVE-2026-20727HIGHCVSS 8.6EG 8.62026-08-11
Null pointer dereference for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 0: Kernel may allow a denial of service. Unprivileged software adversary with an unauthenticated user combined with a low complexity attack ma…
- CVE-2024-20426HIGHCVSS 8.6EG 8.62024-10-23
A vulnerability in the Internet Key Exchange version 2 (IKEv2) protocol for VPN termination of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attack…
- CVE-2024-20436HIGHCVSS 8.6EG 8.62024-09-25
A vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This v…
- CVE-2024-20446HIGHCVSS 8.6EG 8.62024-08-28
A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of spec…
- CVE-2024-43357HIGHCVSS 8.6EG 8.62024-08-15
ECMA-262 is the language specification for the scripting language ECMAScript. A problem in the ECMAScript (JavaScript) specification of async generators, introduced by a May 2021 spec refactor, may lead to mis-implementation in a way that …
- CVE-2022-27497HIGHCVSS 8.6EG 8.62022-11-11
Null pointer dereference in firmware for Intel(R) AMT before version 11.8.93, 11.22.93, 11.12.93, 12.0.92, 14.1.67, 15.0.42, 16.1.25 may allow an unauthenticated user to potentially enable denial of service via network access.
- CVE-2022-2973HIGHCVSS 8.6EG 8.62022-09-23
MZ Automation's libIEC61850 (versions 1.4 and prior; version 1.5 prior to commit a3b04b7bc4872a5a39e5de3fdc5fbde52c09e10e) uses a NULL pointer in certain situations. which could allow an attacker to crash the server.
- CVE-2022-20682HIGHCVSS 8.6EG 8.62022-04-15
A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a den…
- CVE-2021-0251HIGHCVSS 8.6EG 8.62021-04-22
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 an attacker to send malformed HTTP packet…
- CVE-2021-1274HIGHCVSS 8.6EG 8.62021-01-20
Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details sect…
- CVE-2020-3407HIGHCVSS 8.6EG 8.62020-09-24
A vulnerability in the RESTCONF and NETCONF-YANG access control list (ACL) function of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of…
- CVE-2020-3517HIGHCVSS 8.6EG 8.62020-08-27
A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affect…
- CVE-2018-0305HIGHCVSS 8.6EG 8.62018-06-21
A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability e…
- CVE-2024-20339HIGHCVSS 7.5EG 8.62024-10-23
A vulnerability in the TLS processing feature of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected devi…
- CVE-2023-38171HIGHCVSS 7.5EG 8.62023-10-10
Microsoft QUIC Denial of Service Vulnerability
- CVE-2021-26690HIGHCVSS 7.5EG 8.52021-06-10
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
- CVE-2026-64045HIGHCVSS 8.4EG 8.42026-07-19
In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - use cached peer pointer in ovpn_tcp_close() ovpn_tcp_close() loads the ovpn_socket via rcu_dereference_sk_user_data() under rcu_read_lock(), takes a referenc…
- CVE-2026-0710HIGHCVSS 8.4EG 8.42026-01-23
A flaw was found in SIPp. A remote attacker could exploit this by sending specially crafted Session Initiation Protocol (SIP) messages during an active call. This vulnerability, a NULL pointer dereference, can cause the application to cras…
- CVE-2023-43541HIGHCVSS 8.4EG 8.42024-03-04
Memory corruption while invoking the SubmitCommands call on Gfx engine during the graphics render.
- CVE-2023-33088HIGHCVSS 8.4EG 8.42023-12-05
Memory corruption when processing cmd parameters while parsing vdev.
- CVE-2021-35075HIGHCVSS 8.4EG 8.42022-02-11
Possible null pointer dereference due to lack of WDOG structure validation during registration in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
- CVE-2021-1917HIGHCVSS 8.4EG 8.42021-10-20
Null pointer dereference can occur due to memory allocation failure in DIAG in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Wearables
- CVE-2021-1939HIGHCVSS 8.4EG 8.42021-09-17
Null pointer dereference occurs due to improper validation when the preemption feature enablement is toggled in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon We…
- CVE-2021-30294HIGHCVSS 8.4EG 8.42021-09-09
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
- CVE-2021-30290HIGHCVSS 8.4EG 8.42021-09-09
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
- CVE-2021-37639HIGHCVSS 8.4EG 8.42021-08-12
TensorFlow is an end-to-end open source platform for machine learning. When restoring tensors via raw APIs, if the tensor name is not provided, TensorFlow can be tricked into dereferencing a null pointer. Alternatively, attackers can read …
- CVE-2011-1881HIGHCVSS 8.4EG 8.42011-07-13
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges …
- CVE-2011-1282HIGHCVSS 8.4EG 8.42011-07-13
The Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does…
- CVE-2011-1231HIGHCVSS 8.4EG 8.42011-04-13
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges …
- CVE-2024-34719HIGHCVSS 7.8EG 8.42024-11-13
In multiple locations, there is a possible permissions bypass due to a missing null check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
- CVE-2021-34798HIGHCVSS 7.5EG 8.42021-09-16
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.
- CVE-2020-13934HIGHCVSS 7.5EG 8.42020-07-14
An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryE…
- CVE-2016-5423HIGHCVSS 8.3EG 8.32016-12-09
PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), obtain sensitive memo…
- CVE-2026-115403HIGHCVSS 8.2EG 8.22026-11-02
In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, built with BSD raw socket and IPv6 support, the IPv6 raw send path uses the destination-table entry it adds without checking that the add succeeded. When the destination table…
- CVE-2026-100349HIGHCVSS 8.2EG 8.22026-10-15
kin-openapi is a Go project for handling OpenAPI files. Prior to 0.146.0, openapi3filter.ValidateResponse passes a nil response header schema to decodeValue when an OpenAPI document declares the header with content instead of schema. The d…
- CVE-2026-24263HIGHCVSS 8.2EG 8.22026-08-25
NVIDIA DGX Spark contains a vulnerability in the system firmware, where a privileged attacker could be able to cause a NULL pointer dereference. A successful exploit of this vulnerability may lead to code execution, escalation of privilege…
- CVE-2026-72035HIGHCVSS 8.2EG 8.22026-08-15
In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_taprio: Replace direct dequeue call with peek and qdisc_dequeue_peeked When taprio's software path peeks a non-work-conserving child qdisc, the child stas…
- CVE-2026-19024HIGHCVSS 8.2EG 8.22026-08-05
NULL pointer dereference in H5Pget_fill_value in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is…
- CVE-2026-44328HIGHCVSS 8.2EG 8.22026-05-27
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. On top of that, the DELETE /upi/v1/upNodesLinks/{upNodeRef} handler unc…
- CVE-2026-28224HIGHCVSS 8.2EG 8.22026-04-17
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when the server receives an op_crypt_key_callback packet without prior authentication, the port_server_crypt_callback handler i…
- CVE-2021-41839HIGHCVSS 8.2EG 8.22022-02-03
An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM.…
- CVE-2019-10510HIGHCVSS 8.2EG 8.22019-09-30
BT process died and BT toggled due to null pointer dereference when invalid vendor pass through command sent from remote in Snapdragon Auto, Snapdragon Consumer IOT, Snapdragon Mobile, Snapdragon Voice & Music in QCS405, QCS605, SD 636, SD…
- CVE-2025-21285HIGHCVSS 7.5EG 8.22025-01-14
Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability
- CVE-2018-8011HIGHCVSS 7.5EG 8.22018-07-18
By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33).
- CVE-2017-7659HIGHCVSS 7.5EG 8.22017-07-26
A maliciously constructed HTTP/2 request could cause mod_http2 in Apache HTTP Server 2.4.24, 2.4.25 to dereference a NULL pointer and crash the server process.
- CVE-2017-3730HIGHCVSS 7.5EG 8.22017-05-04
In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in…
- CVE-2004-0389HIGHCVSS 7.5EG 8.22004-06-01
RealNetworks Helix Universal Server 9.0.1 and 9.0.2 allows remote attackers to cause a denial of service (crash) via malformed requests that trigger a null dereference, as demonstrated using (1) GET_PARAMETER or (2) DESCRIBE requests.
- CVE-2026-86136HIGHCVSS 8.1EG 8.12026-09-29
A missing authorization vulnerability in the wgagent management daemon's session initialization function allows an authenticated, low-privileged user (including a read-only or guest administrator account) to crash the wgagent process and r…
- CVE-2026-64235HIGHCVSS 8.1EG 8.12026-07-24
In the Linux kernel, the following vulnerability has been resolved: x86/ftrace: Relocate %rip-relative percpu refs in dynamic trampolines With CONFIG_CALL_DEPTH_TRACKING enabled on an x86 retbleed-affected platform (eg: Skylake), with re…
- CVE-2026-10678HIGHCVSS 8.1EG 8.12026-07-21
The MCTP-over-I2C+GPIO target binding in Zephyr (subsys/pmci/mctp/mctp_i2c_gpio_target.c) processes pseudo-register writes from an I2C bus master byte-by-byte in mctp_i2c_gpio_target_write_received() without validating the order or the rec…
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