VYPR

CWE-457

Use of Uninitialized Variable

VariantDraftLikelihood: High

Description

The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

In some languages such as C and C++, stack variables are not initialized by default. They generally contain junk data with the contents of stack memory before the function was invoked. An attacker can sometimes control or read these contents. In other languages or conditions, a variable that is not explicitly initialized can be given a default value that has security implications, depending on the logic of the program. The presence of an uninitialized variable can sometimes indicate a typographic error in the code.

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CVEs mapped to this weakness (232)

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  • CVE-2025-5777HigKEVJun 17, 2025
    risk 0.78cvss 7.5epss 1.00

    Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server

  • CVE-2021-40418CriDec 22, 2021
    risk 0.65cvss 9.8epss 0.18

    When parsing a file that is submitted to the DPDecoder service as a job, the R3D SDK will mistakenly skip over the assignment of a property containing an object referring to a UUID that was parsed from a frame within the video container. Upon destruction of the object that owns…

  • CVE-2026-6748CriApr 21, 2026
    risk 0.64cvss 9.8epss 0.00

    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.

  • CVE-2024-47540CriDec 12, 2024
    risk 0.64cvss 9.8epss 0.01

    GStreamer is a library for constructing graphs of media-handling components. An uninitialized stack variable vulnerability has been identified in the gst_matroska_demux_add_wvpk_header function within matroska-demux.c. When size < 4, the program calls gst_buffer_unmap with an…

  • CVE-2024-10934CriNov 15, 2024
    risk 0.64cvss 9.8epss 0.00

    In OpenBSD 7.5 before errata 008 and OpenBSD 7.4 before errata 021, avoid possible mbuf double free in NFS client and server implementation, do not use uninitialized variable in error handling of NFS server.

  • CVE-2024-32611CriMay 14, 2024
    risk 0.64cvss 9.8epss 0.01

    HDF5 Library through 1.14.3 may use an uninitialized value in H5A__attr_release_table in H5Aint.c.

  • CVE-2022-40510CriAug 8, 2023
    risk 0.64cvss 9.8epss 0.00

    Memory corruption due to buffer copy without checking size of input in Audio while voice call with EVS vocoder.

  • CVE-2022-21217CriJan 28, 2022
    risk 0.64cvss 9.8epss 0.01

    An out-of-bounds write vulnerability exists in the device TestEmail functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-crafted network request can lead to an out-of-bounds write. An attacker can send an HTTP request to trigger this vulnerability.

  • CVE-2009-0901HigJul 29, 2009
    risk 0.60cvss 8.8epss 0.37

    The Active Template Library (ATL) in Microsoft Visual Studio .NET 2003 SP1, Visual Studio 2005 SP1 and 2008 Gold, and Visual C++ 2005 SP1 and 2008 Gold and SP1; and Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2; does…

  • CVE-2026-2806CriFeb 24, 2026
    risk 0.59cvss 9.1epss 0.00

    Uninitialized memory in the Graphics: Text component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

  • CVE-2026-15132HigJul 8, 2026
    risk 0.57cvss 8.8epss 0.00

    Uninitialized Use in V8 in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

  • CVE-2026-13825HigJun 30, 2026
    risk 0.57cvss 8.8epss 0.00

    Uninitialized Use in Dawn in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

  • CVE-2025-5749HigJun 6, 2025
    risk 0.57cvss 8.8epss 0.00

    WOLFBOX Level 2 EV Charger BLE Encryption Keys Uninitialized Variable Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of WOLFBOX Level 2 EV Charger devices. Authentication is not…

  • CVE-2024-6990HigAug 1, 2024
    risk 0.57cvss 8.8epss 0.01

    Uninitialized Use in Dawn in Google Chrome on Android prior to 127.0.6533.88 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page. (Chromium security severity: Critical)

  • CVE-2023-31275HigNov 27, 2023
    risk 0.57cvss 8.8epss 0.02

    An uninitialized pointer use vulnerability exists in the functionality of WPS Office 11.2.0.11537 that handles Data elements in an Excel file. A specially crafted malformed file can lead to remote code execution. An attacker can provide a malicious file to trigger this…

  • CVE-2025-20271HigJun 18, 2025
    risk 0.56cvss 8.6epss 0.01

    A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the Cisco AnyConnect service on an affected device. This…

  • CVE-2020-27124HigNov 18, 2024
    risk 0.56cvss 8.6epss 0.01

    A vulnerability in the SSL/TLS handler of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause the affected device to reload unexpectedly, leading to a denial of service (DoS) condition. The vulnerability is due to…

  • CVE-2024-33021HigAug 5, 2024
    risk 0.55cvss 8.4epss 0.00

    Memory corruption while processing IOCTL call to set metainfo.

  • CVE-2026-10960HigJun 4, 2026
    risk 0.54cvss 8.3epss 0.00

    Uninitialized Use in Codecs in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

  • CVE-2026-9972HigMay 28, 2026
    risk 0.54cvss 8.3epss 0.00

    Uninitialized Use in Gamepad in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)