CWE-457
AllowedUse of Uninitialized Variable
Abstraction: Variant · Status: Draft
The code uses a variable that has not been initialized, leading to unpredictable or unintended results.
363 vulnerabilities reference this CWE, most recent first.
GHSA-PGVF-397W-WH5F
Vulnerability from github – Published: 2026-07-02 00:31 – Updated: 2026-07-02 03:31Uninitialized Use in Dawn in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-14399"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-01T23:16:48Z",
"severity": "MODERATE"
},
"details": "Uninitialized Use in Dawn in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-pgvf-397w-wh5f",
"modified": "2026-07-02T03:31:26Z",
"published": "2026-07-02T00:31:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14399"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/513006745"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-PH4R-CPRG-444J
Vulnerability from github – Published: 2024-05-14 18:30 – Updated: 2024-08-19 21:35HDF5 Library through 1.14.3 may use an uninitialized value in H5A__attr_release_table in H5Aint.c.
{
"affected": [],
"aliases": [
"CVE-2024-32611"
],
"database_specific": {
"cwe_ids": [
"CWE-457",
"CWE-908"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T15:36:46Z",
"severity": "CRITICAL"
},
"details": "HDF5 Library through 1.14.3 may use an uninitialized value in H5A__attr_release_table in H5Aint.c.",
"id": "GHSA-ph4r-cprg-444j",
"modified": "2024-08-19T21:35:06Z",
"published": "2024-05-14T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-32611"
},
{
"type": "WEB",
"url": "https://www.hdfgroup.org/2024/05/new-hdf5-cve-issues-fixed-in-1-14-4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-PH86-G9R3-5QW4
Vulnerability from github – Published: 2024-02-24 06:30 – Updated: 2025-02-12 21:59Versions of the package fastecdsa before 2.3.2 use an Uninitialized Variable on the stack, via the curvemath_mul function in src/curveMath.c, due to being used and interpreted as user-defined type. Depending on the variable's actual value it could be arbitrary free(), arbitrary realloc(), null pointer dereference and other. Since the stack can be controlled by the attacker, the vulnerability could be used to corrupt allocator structure, leading to possible heap exploitation. The attacker could cause denial of service by exploiting this vulnerability.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "fastecdsa"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-21502"
],
"database_specific": {
"cwe_ids": [
"CWE-457",
"CWE-908"
],
"github_reviewed": true,
"github_reviewed_at": "2025-02-12T21:59:29Z",
"nvd_published_at": "2024-02-24T05:15:44Z",
"severity": "HIGH"
},
"details": "Versions of the package fastecdsa before 2.3.2 use an Uninitialized Variable on the stack, via the curvemath_mul function in src/curveMath.c, due to being used and interpreted as user-defined type. Depending on the variable\u0027s actual value it could be arbitrary free(), arbitrary realloc(), null pointer dereference and other. Since the stack can be controlled by the attacker, the vulnerability could be used to corrupt allocator structure, leading to possible heap exploitation. The attacker could cause denial of service by exploiting this vulnerability.",
"id": "GHSA-ph86-g9r3-5qw4",
"modified": "2025-02-12T21:59:29Z",
"published": "2024-02-24T06:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21502"
},
{
"type": "WEB",
"url": "https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36"
},
{
"type": "WEB",
"url": "https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26"
},
{
"type": "PACKAGE",
"url": "https://github.com/AntonKueltz/fastecdsa"
},
{
"type": "WEB",
"url": "https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Uninitialized Variable in fastecdsa"
}
GHSA-PVH9-2948-MGMJ
Vulnerability from github – Published: 2025-02-03 06:30 – Updated: 2025-02-03 18:30In DA, there is a possible read of uninitialized heap data due to uninitialized data. This could lead to local information disclosure, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS09291449; Issue ID: MSV-2066.
{
"affected": [],
"aliases": [
"CVE-2025-20638"
],
"database_specific": {
"cwe_ids": [
"CWE-457",
"CWE-908"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-03T04:15:08Z",
"severity": "MODERATE"
},
"details": "In DA, there is a possible read of uninitialized heap data due to uninitialized data. This could lead to local information disclosure, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS09291449; Issue ID: MSV-2066.",
"id": "GHSA-pvh9-2948-mgmj",
"modified": "2025-02-03T18:30:41Z",
"published": "2025-02-03T06:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20638"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/February-2025"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q2MH-HQ2M-M2MM
Vulnerability from github – Published: 2026-09-24 15:31 – Updated: 2026-09-24 15:31IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.
{
"affected": [],
"aliases": [
"CVE-2026-19492"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-24T15:17:20Z",
"severity": "LOW"
},
"details": "IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.",
"id": "GHSA-q2mh-hq2m-m2mm",
"modified": "2026-09-24T15:31:34Z",
"published": "2026-09-24T15:31:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19492"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7289137"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q386-C4R6-FHPQ
Vulnerability from github – Published: 2024-05-03 03:31 – Updated: 2024-05-03 03:31PDF-XChange Editor J2K File Parsing Uninitialized Variable Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of J2K files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-20909.
{
"affected": [],
"aliases": [
"CVE-2023-42048"
],
"database_specific": {
"cwe_ids": [
"CWE-457",
"CWE-908"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:15:38Z",
"severity": "LOW"
},
"details": "PDF-XChange Editor J2K File Parsing Uninitialized Variable Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of J2K files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-20909.",
"id": "GHSA-q386-c4r6-fhpq",
"modified": "2024-05-03T03:31:00Z",
"published": "2024-05-03T03:31:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42048"
},
{
"type": "WEB",
"url": "https://www.tracker-software.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1351"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q545-RCCV-33G7
Vulnerability from github – Published: 2026-06-05 00:31 – Updated: 2026-06-05 21:31Race in GPU in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-11064"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-04T23:17:10Z",
"severity": "MODERATE"
},
"details": "Race in GPU in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-q545-rccv-33g7",
"modified": "2026-06-05T21:31:57Z",
"published": "2026-06-05T00:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11064"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/499075743"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q6RP-8Q4H-V3MC
Vulnerability from github – Published: 2026-08-20 00:35 – Updated: 2026-08-20 00:35ESS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
{
"affected": [],
"aliases": [
"CVE-2026-76919"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-19T23:16:20Z",
"severity": "MODERATE"
},
"details": "ESS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service",
"id": "GHSA-q6rp-8q4h-v3mc",
"modified": "2026-08-20T00:35:10Z",
"published": "2026-08-20T00:35:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76919"
},
{
"type": "WEB",
"url": "https://gitlab.com/wireshark/wireshark/-/work_items/21467"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2026-86.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-Q7RV-P9GV-MCJ9
Vulnerability from github – Published: 2024-05-08 00:31 – Updated: 2024-05-08 00:31Foxit PDF Reader Annotation Use of Uninitialized Variable Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of Annotation objects. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14658.
{
"affected": [],
"aliases": [
"CVE-2021-34953"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-07T23:15:08Z",
"severity": "HIGH"
},
"details": "Foxit PDF Reader Annotation Use of Uninitialized Variable Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the handling of Annotation objects. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14658.",
"id": "GHSA-q7rv-p9gv-mcj9",
"modified": "2024-05-08T00:31:13Z",
"published": "2024-05-08T00:31:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34953"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1184"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-QC4P-7G72-JQRQ
Vulnerability from github – Published: 2024-05-01 18:30 – Updated: 2024-05-07 12:30An uninitialized memory use vulnerability exists in Tinyproxy 1.11.1 while parsing HTTP requests. In certain configurations, a specially crafted HTTP request can result in disclosure of data allocated on the heap, which could contain sensitive information. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2023-40533"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-01T16:15:06Z",
"severity": "MODERATE"
},
"details": "An uninitialized memory use vulnerability exists in Tinyproxy 1.11.1 while parsing HTTP requests. In certain configurations, a specially crafted HTTP request can result in disclosure of data allocated on the heap, which could contain sensitive information. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.",
"id": "GHSA-qc4p-7g72-jqrq",
"modified": "2024-05-07T12:30:50Z",
"published": "2024-05-01T18:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-40533"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1902"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/05/07/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-57
Strategy: Attack Surface Reduction
Ensure that critical variables are initialized before first use [REF-1485].
Mitigation
Strategy: Compilation or Build Hardening
Most compilers will complain about the use of uninitialized variables if warnings are turned on.
Mitigation
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.
Mitigation
Strategy: Language Selection
Choose a language that is not susceptible to these issues.
Mitigation
Mitigating technologies such as safe string libraries and container abstractions could be introduced.
No CAPEC attack patterns related to this CWE.