CWE-476— NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.— MITRE CWE catalog
5,765 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-476page 13 of 116
- CVE-2026-46110HIGHCVSS 7.5EG 7.52026-05-28
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Prevent NULL deref when RX memory exhausted The CPU receives frames from the MAC through conventional DMA: the CPU allocates buffers for the MAC, then the M…
- CVE-2026-8360HIGHCVSS 7.5EG 7.52026-05-27
Function calls to WOSCommonUtil.dll!WOSSysInfoGetDeviceInterface() in various DLLs (i.e., WOSProfileMgrModule.dll, WOSWebDavModule.dll) can return a NULL pointer (i.e., when no user is logged into the Triofox Server Agent Management Consol…
- CVE-2026-8359HIGHCVSS 7.5EG 7.52026-05-27
When processing a request with a URL path starting with /status or /sysinfo, WOSHttpStatusModule.dll is to be loaded to handle such URL patterns. The WOSBin_LoadHttpModule function in the dll would be called to set up a "module" object for…
- CVE-2026-45104HIGHCVSS 7.5EG 7.52026-05-27
MapServer is a system for developing web-based GIS applications. From 6.4.0 to before 8.6.3, msSLDParseUserStyle always calls _SLDApplyRuleValues(psRule, psLayer, 1); for any <Rule> carrying <ElseFilter/> — it assumes msSLDParseRule adde…
- CVE-2026-44322HIGHCVSS 7.5EG 7.52026-05-27
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF PATCH /3gpp-pfd-management/v1/{afId}/transactions/{transId}/applications/{appId} handler panics with a nil-pointer dereference when the upstream…
- CVE-2026-44316HIGHCVSS 7.5EG 7.52026-05-27
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-smpolicycontrol/v1/sm-policies handler (HandleCreateSmPolicyRequest) panics with a nil-pointer dereference when a downstream OpenAPI …
- CVE-2026-8180HIGHCVSS 7.5EG 7.52026-05-27
IBM Aspera High-Speed Transfer Endpoint 3.7.4 through 4.4.7 Fix Pack 1 and IBM Aspera High-Speed Transfer Server 3.7.4 through 4.4.7 Fix Pack 1 and IBM Aspera High-Speed Transfer Endpoint are affected by a potential denial of service in th…
- CVE-2026-46024HIGHCVSS 7.5EG 7.52026-05-27
In the Linux kernel, the following vulnerability has been resolved: libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply() If a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both protocol and result, this i…
- CVE-2026-8850HIGHCVSS 7.5EG 7.52026-05-26
IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_ibm_upload.
- CVE-2026-48829HIGHCVSS 7.5EG 7.52026-05-24
In GNU SASL before 2.2.3, DIGEST-MD5 has a NULL pointer dereference affecting both clients and servers, via a known token with no accompanying = character. This occurs in lib/digest-md5/getsubopt.c.
- CVE-2026-47308HIGHCVSS 7.5EG 7.52026-05-19
NULL pointer dereference vulnerability in Samsung Open Source Walrus allows Pointer Manipulation. This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
- CVE-2026-47307HIGHCVSS 7.5EG 7.52026-05-19
NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions. This issue affects Walrus: f339b8ee4ea701772e8ae6…
- CVE-2026-42409HIGHCVSS 7.5EG 7.52026-05-13
When an HTTP/2 profile and an iRule containing the HTTP::redirect or HTTP::respond command are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Softwar…
- CVE-2026-40405HIGHCVSS 7.5EG 7.52026-05-12
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.
- CVE-2025-40833HIGHCVSS 7.5EG 7.52026-05-12
The affected devices contain a null pointer dereference vulnerability while processing specially crafted IPv4 requests. This could allow an attacker to cause denial of service condition. A manual restart is required to recover the system.
- CVE-2026-7262HIGHCVSS 7.5EG 7.52026-05-10
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when a SOAP server has a typemap configured, the decoding process contains a mistake which checks the wrong variable in case of missing …
- CVE-2026-6666HIGHCVSS 7.5EG 7.52026-05-09
A possible null pointer reference in PgBouncer before 1.25.2 could lead to a crash, if a server sends an error response without SQLSTATE field.
- CVE-2026-43441HIGHCVSS 7.5EG 7.52026-05-08
In the Linux kernel, the following vulnerability has been resolved: net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, the nd_tbl is never initialized because inet6_init() ex…
- CVE-2026-39836HIGHCVSS 7.5EG 7.52026-05-07
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
- CVE-2026-42285HIGHCVSS 7.5EG 7.52026-05-07
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message.…
- CVE-2026-41642HIGHCVSS 7.5EG 7.52026-05-07
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UP…
- CVE-2026-43213HIGHCVSS 7.5EG 7.52026-05-06
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: pci: validate sequence number of TX release report Hardware rarely reports abnormal sequence number in TX release report, which will access out-of-bounds of…
- CVE-2026-43164HIGHCVSS 7.5EG 7.52026-05-06
In the Linux kernel, the following vulnerability has been resolved: udplite: Fix null-ptr-deref in __udp_enqueue_schedule_skb(). syzbot reported null-ptr-deref of udp_sk(sk)->udp_prod_queue. [0] Since the cited commit, udp_lib_init_sock…
- CVE-2026-43101HIGHCVSS 7.5EG 7.52026-05-06
In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data() We need to check __in6_dev_get() for possible NULL value, as suggested by Yiming Qian. Also add…
- CVE-2026-43099HIGHCVSS 7.5EG 7.52026-05-06
In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: fix null-ptr-deref in icmp_build_probe() ipv6_stub->ipv6_dev_find() may return ERR_PTR(-EAFNOSUPPORT) when the IPv6 stack is not active (CONFIG_IPV6=m and no…
- CVE-2026-29169HIGHCVSS 7.5EG 7.52026-05-04
A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case f…
- CVE-2026-42478HIGHCVSS 7.5EG 7.52026-05-01
An issue was discovered in VrmlData_IndexedFaceSet::TShape in the VRML V2.0 parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML …
- CVE-2026-40355HIGHCVSS 7.5EG 7.52026-04-28
In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigge…
- CVE-2026-31256HIGHCVSS 7.5EG 7.52026-04-27
A null pointer dereference vulnerability exists in the RTSP service of the MERCURY MIPC252W 1.0.5 Build 230306 Rel.79931n. During the processing of a SETUP request for the path rtsp://<IP>:554/stream1/track2, the device fails to properly v…
- CVE-2026-31638HIGHCVSS 7.5EG 7.52026-04-24
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Only put the call ref if one was acquired rxrpc_input_packet_on_conn() can process a to-client packet after the current client call on the channel has already bee…
- CVE-2026-31600HIGHCVSS 7.5EG 7.52026-04-24
In the Linux kernel, the following vulnerability has been resolved: arm64: mm: Handle invalid large leaf mappings correctly It has been possible for a long time to mark ptes in the linear map as invalid. This is done for secretmem, kfenc…
- CVE-2026-31477HIGHCVSS 7.5EG 7.52026-04-22
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix memory leaks and NULL deref in smb2_lock() smb2_lock() has three error handling issues after list_del() detaches smb_lock from lock_list at no_check_cl: 1) I…
- CVE-2026-28212HIGHCVSS 7.5EG 7.52026-04-17
Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and 3.0.14, when processing an op_slice network packet, the server passes an unprepared structure containing a null pointer to the S…
- CVE-2026-30656HIGHCVSS 7.5EG 7.52026-04-16
A NULL pointer dereference vulnerability exists in fio (Flexible I/O Tester) v3.41 when parsing job files containing the fdp_pli option. The callback function str_fdp_pli_cb() does not validate the input pointer and calls strdup() on a NUL…
- CVE-2026-32071HIGHCVSS 7.5EG 7.52026-04-14
Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
- CVE-2025-69624HIGHCVSS 7.5EG 7.52026-04-13
Nitro PDF Pro before 14.43 for Windows contains a NULL pointer dereference vulnerability in the JavaScript implementation of app.alert(). When app.alert() is called with more than one argument and the first argument evaluates to null (for …
- CVE-2025-66769HIGHCVSS 7.5EG 7.52026-04-13
A NULL pointer dereference in Nitro PDF Pro for Windows v14.41.1.4 allows attackers to cause a Denial of Service (DoS) via a crafted XFA packet.
- CVE-2026-1584HIGHCVSS 7.5EG 7.52026-04-09
A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a…
- CVE-2026-28390HIGHCVSS 7.5EG 7.52026-04-07
Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authenti…
- CVE-2026-28389HIGHCVSS 7.5EG 7.52026-04-07
Issue summary: During processing of a crafted CMS EnvelopedData message with KeyAgreeRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authenticati…
- CVE-2026-28388HIGHCVSS 7.5EG 7.52026-04-07
Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if the required CRL Number extension is missing. Impact summary: A NULL pointer dereference can trigger a c…
- CVE-2026-31931HIGHCVSS 7.5EG 7.52026-04-02
Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, use of the "tls.alpn" rule keyword can cause Suricata to crash with a NULL dereference. This issue has been patched in version 8.0.4.
- CVE-2026-34874HIGHCVSS 7.5EG 7.52026-04-01
An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.
- CVE-2026-32696HIGHCVSS 7.5EG 7.52026-03-30
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In NanoMQ version 0.24.6, after enabling auth.http_auth (HTTP authentication), when a client connects to the broker using MQTT CONNECT without providing username/passwor…
- CVE-2026-4652HIGHCVSS 7.5EG 7.52026-03-26
On a system exposing an NVMe/TCP target, a remote client can trigger a kernel panic by sending a CONNECT command for an I/O queue with a bogus or stale CNTLID. An attacker with network access to the NVMe/TCP target can trigger an unauthen…
- CVE-2026-29785HIGHCVSS 7.5EG 7.52026-03-25
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the "leafnode" configuration enabled (not default), then anyone who can connect ca…
- CVE-2026-32854HIGHCVSS 7.5EG 7.52026-03-24
LibVNCServer versions 0.9.15 and prior (fixed in commit dc78dee) contain null pointer dereference vulnerabilities in the HTTP proxy handlers within httpProcessInput() in httpd.c that allow remote attackers to cause a denial of service by …
- CVE-2026-27651HIGHCVSS 7.5EG 7.52026-03-24
When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the a…
- CVE-2026-33853HIGHCVSS 7.5EG 7.52026-03-24
NULL Pointer Dereference vulnerability in MolotovCherry Android-ImageMagick7.This issue affects Android-ImageMagick7: before 7.1.2-10.
- CVE-2026-33283HIGHCVSS 7.5EG 7.52026-03-24
Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a Request Type. An attacker able to send crafted NAS messages to Ella Core can crash the pr…
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