Weakness (CWE)
CWE-457: Use of Uninitialized Variable
The code uses a variable that has not been initialized, leading to unpredictable or unintended results.
How to prevent it (5 mitigations)
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Implementation
Ensure that critical variables are initialized before first use [REF-1485].
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Build and Compilation
Most compilers will complain about the use of uninitialized variables if warnings are turned on.
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Implementation, Operation
When using a language that does not require explicit declaration of variables, run or compile the software in a mode that reports undeclared or unknown variables. This may indicate the presence of a typographic error in the variable's name.
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Requirements
Choose a language that is not susceptible to these issues.
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Architecture and Design
Mitigating technologies such as safe string libraries and container abstractions could be introduced.
Source: MITRE CWE-457
297 results · Feed
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Medium 5.7
Libopensc: opensc: multiple uses of uninitialized variable
Multiple uses of uninitialized variables were found in libopensc that may lead to information disclosure or application crash. An attack requires a crafted USB device or smart card that would present the system with specially crafted responses to the APDUs
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High 8.8
netfs: Fix read abandonment during retry
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix read abandonment during retry Under certain circumstances, all the remaining subrequests from a read request will get abandoned during retry. The abandonment process expects the 's…
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High 7.3
Uninitialized memory in the Audio/Video: Web Codecs component
Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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Critical 9.8
Uninitialized memory in the Audio/Video: Web Codecs component
Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
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High 8.3
Uninitialized Use in Accessibility in Google Chrome on Windows prior to 147.0.7727.101 allowed a remote attacker who ha…
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Medium 6.5
Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially …
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Medium 4.9
nanomq: Heap-Buffer-Overflow in webhook_inproc.c via cJSON_Parse OOB Read
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.10, in NanoMQ's webhook_inproc.c, the hook_work_cb() function processes nng messages by parsing the message body with cJSON_Parse(body). The body is obtained from nng_…
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High 7.8
drm/vmwgfx: Return the correct value in vmw_translate_ptr functions
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Return the correct value in vmw_translate_ptr functions Before the referenced fixes these functions used a lookup function that returned a pointer. This was changed to another loo…
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Medium 6.5
Stack memory disclosure in filemd5 command
An authenticated user with the read role may read limited amounts of uninitialized stack memory via specially-crafted issuances of the filemd5 command.
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High 7.4
Cisco Nexus 3600-R and 9500-R Series Switching Platforms Layer 2 Loop Denial of Service Vulnerability
A vulnerability with the Ethernet VPN (EVPN) Layer 2 ingress packet processing of Cisco Nexus 3600 Platform Switches and Cisco Nexus 9500-R Series Switching Platforms could allow an unauthenticated, adjacent attacker to trigger a Layer 2 traffic loop. This vu…
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Critical 9.1
Uninitialized memory in the Graphics: Text component
Uninitialized memory in the Graphics: Text component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
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High 7.8
Use of Uninitialized Variable vulnerability affecting the EPRT file reading procedure in SOLIDWORKS eDrawings from Release SOLIDWORKS Desktop 2025 through Release SOLIDWORKS Desktop 2026
A Use of Uninitialized Variable vulnerability affecting the EPRT file reading procedure in SOLIDWORKS eDrawings from Release SOLIDWORKS Desktop 2025 through Release SOLIDWORKS Desktop 2026 could allow an attacker to execute arbitrary code while opening a spec…
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High 8.8
iommu/sva: invalidate stale IOTLB entries for kernel address space
In the Linux kernel, the following vulnerability has been resolved: iommu/sva: invalidate stale IOTLB entries for kernel address space Introduce a new IOMMU interface to flush IOTLB paging cache entries for the CPU kernel address space. This interface is invo…
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Low 1.2
QTS, QuTS hero
A use of uninitialized variable vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to denial of service conditions, or modify control f…
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Medium 5.9
Improper Initialization within the AMD Secure Encrypted Virtualization (SEV) firmware can allow an admin privileged att…
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Medium 4.1
Use of uninitialized variable for some TDX Module before version tdx1.5 within Ring 0: Hypervisor may allow an informat…
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High 7.5CVE-2026-23003 Public exploit
ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()
In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() Blamed commit did not take care of VLAN encapsulations as spotted by syzbot [1]. Use skb_vlan_inet_prepare() instead of pskb_inet_ma…
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High 7.8
drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer
In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer Initialize the eb.vma array with values of 0 when the eb structure is first set up. In particular, this sets the eb->v…
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Unscored —
RDMA/core: Check for the presence of LS_NLA_TYPE_DGID correctly
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Check for the presence of LS_NLA_TYPE_DGID correctly The netlink response for RDMA_NL_LS_OP_IP_RESOLVE should always have a LS_NLA_TYPE_DGID attribute, it is invalid if it does not…
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Medium 6.3
iccDEV has Type Confusion in CIccTagXmlTagData::ToXml()
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 `CIccTagXmlTagData::…
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Medium 6.9
Panda3D <= 1.10.16 Deploy-Stub Stack Exhaustion via Unbounded alloca()
The deploy-stub component in Panda3D versions up to and including 1.10.16 contains a denial of service vulnerability due to unbounded stack allocation. The deploy-stub executable allocates argv_copy and argv_copy2 using alloca() based directly on the attacker…
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High 7.8
Use of Uninitialized Variable in HLOS
Memory corruption while processing identity credential operations in the trusted application.
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Medium 6.7
In display, there is a possible memory corruption due to uninitialized data. This could lead to local escalation of pri…
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High 7.0
A Use of Uninitialized Variable vulnerability exists in Open Design Alliance Drawings SDK static versions (mt) before 2…
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High 7.8
In trusty_ffa_mem_reclaim of shared-mem-smcall.c, there is a possible memory corruption due to uninitialized data. This…
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High 8.1
Multiple vulnerabilities in Aqara Hub firmware update process in the Camera Hub G3 4.1.9_0027, Hub M2 4.3.6_0027, and H…
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Medium 6.7
In display, there is a possible escalation of privilege due to improper input validation. This could lead to local esca…
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High 7.8
In display, there is a possible memory corruption due to improper input validation. This could lead to local escalation…
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Low 2.0
OpenEXR Makes Use of Uninitialized Memory
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports…
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High 7.5
BIG-IP IPSec vulnerability
When IPsec is configured on the BIG-IP system, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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High 7.8
Ashlar-Vellum Cobalt AR File Parsing Uninitialized Variable Remote Code Execution Vulnerability
Ashlar-Vellum Cobalt AR File Parsing Uninitialized Variable Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit th…
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High 7.8
Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution Vulnerability
Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Graphite. User interaction is required to explo…
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High 7.8
Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution Vulnerability
Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Graphite. User interaction is required to explo…
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Medium 5.5
Dragonfly incorrectly handles a task structure’s usedTraffic field
Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the processPieceFromSource method does not update the structure’s usedTraffic field, because an uninitialized variable n is used as a guard to the AddTraffi…
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High 7.8
Use of Uninitialized Variable vulnerability affecting the JT file reading procedure in SOLIDWORKS eDrawings on Release SOLIDWORKS Desktop 2025
A Use of Uninitialized Variable vulnerability affecting the JT file reading procedure in SOLIDWORKS eDrawings on Release SOLIDWORKS Desktop 2025 could allow an attacker to execute arbitrary code while opening a specially crafted JT file.
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Low 2.8
Use of an uninitialized variable in the ASP could allow an attacker to access leftover data from a trusted execution en…
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Medium 5.5
In writeToParcel of CursorWindow.cpp, there is a possible out of bounds read due to uninitialized data. This could lead…
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High 7.5
In dng_lossless_decoder::HuffDecode of dng_lossless_jpeg.cpp, there is a possible way to cause a crash due to uninitial…
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Medium 6.5
Uninitialized memory in the JavaScript Engine component
Uninitialized memory in the JavaScript Engine component. This vulnerability was fixed in Firefox 142, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.
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High 7.8
DGN File Parsing Uninitialized Variable Vulnerability
A maliciously crafted DGN file, when parsed through Autodesk AutoCAD, can force an Uninitialized Variable vulnerability. A malicious actor can leverage this vulnerability to cause a crash, read sensitive data, or execute arbitrary code in the context of the c…