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.
332 vulnerabilities reference this CWE, most recent first.
GHSA-J3RX-39F7-R8HW
Vulnerability from github – Published: 2025-07-22 21:31 – Updated: 2025-11-03 21:34On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.
{
"affected": [],
"aliases": [
"CVE-2025-8027"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-22T21:15:49Z",
"severity": "MODERATE"
},
"details": "On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability affects Firefox \u003c 141, Firefox ESR \u003c 115.26, Firefox ESR \u003c 128.13, Firefox ESR \u003c 140.1, Thunderbird \u003c 141, Thunderbird \u003c 128.13, and Thunderbird \u003c 140.1.",
"id": "GHSA-j3rx-39f7-r8hw",
"modified": "2025-11-03T21:34:10Z",
"published": "2025-07-22T21:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8027"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1968423"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-56"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-57"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-58"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-59"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-61"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-62"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-63"
}
],
"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-J5M7-574H-8RWP
Vulnerability from github – Published: 2022-02-19 00:01 – Updated: 2022-02-26 00:00This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 JT files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15027.
{
"affected": [],
"aliases": [
"CVE-2021-46566"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-18T20:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 JT files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15027.",
"id": "GHSA-j5m7-574h-8rwp",
"modified": "2022-02-26T00:00:55Z",
"published": "2022-02-19T00:01:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46566"
},
{
"type": "WEB",
"url": "https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0005"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-153"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-J69Q-QFWM-M736
Vulnerability from github – Published: 2024-11-18 18:30 – Updated: 2024-11-18 18:30A 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 improper error handling on established SSL/TLS connections. An attacker could exploit this vulnerability by establishing an SSL/TLS connection with the affected device and then sending a malicious SSL/TLS message within that connection. A successful exploit could allow the attacker to cause the device to reload.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2020-27124"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-18T16:15:06Z",
"severity": "HIGH"
},
"details": "A vulnerability in the SSL/TLS handler of Cisco\u0026nbsp;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.\nThe vulnerability is due to improper error handling on established SSL/TLS connections. An attacker could exploit this vulnerability by establishing an SSL/TLS connection with the affected device and then sending a malicious SSL/TLS message within that connection. A successful exploit could allow the attacker to cause the device to reload.Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.",
"id": "GHSA-j69q-qfwm-m736",
"modified": "2024-11-18T18:30:56Z",
"published": "2024-11-18T18:30:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27124"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-dos-7uZWwSEy"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-xss-bLZw4Ctq"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-rv-routers-xss-K7Z5U6q3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-J8JQ-C54R-3XX9
Vulnerability from github – Published: 2025-07-15 15:31 – Updated: 2025-07-15 15:31Use of Uninitialized Variable vulnerability exists in the JT file reading procedure in SOLIDWORKS eDrawings on Release SOLIDWORKS Desktop 2025. This vulnerability could allow an attacker to execute arbitrary code while opening a specially crafted JT file.
{
"affected": [],
"aliases": [
"CVE-2025-6974"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-15T15:15:26Z",
"severity": "HIGH"
},
"details": "Use of Uninitialized Variable vulnerability exists in the JT file reading procedure in SOLIDWORKS eDrawings on Release SOLIDWORKS Desktop 2025. This vulnerability could allow an attacker to execute arbitrary code while opening a specially crafted JT file.",
"id": "GHSA-j8jq-c54r-3xx9",
"modified": "2025-07-15T15:31:01Z",
"published": "2025-07-15T15:31:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6974"
},
{
"type": "WEB",
"url": "https://www.3ds.com/trust-center/security/security-advisories/cve-2025-6974"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JC9W-Q838-488C
Vulnerability from github – Published: 2026-06-05 00:31 – Updated: 2026-06-05 18:31Uninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-11090"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-04T23:17:13Z",
"severity": "MODERATE"
},
"details": "Uninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-jc9w-q838-488c",
"modified": "2026-06-05T18:31:35Z",
"published": "2026-06-05T00:31:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11090"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/500161302"
}
],
"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-JCP9-WRQQ-GG3H
Vulnerability from github – Published: 2024-09-24 00:31 – Updated: 2024-09-25 21:30Uninitialized Use in V8 in Google Chrome prior to 123.0.6312.58 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2024-7022"
],
"database_specific": {
"cwe_ids": [
"CWE-457",
"CWE-908"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-23T22:15:03Z",
"severity": "HIGH"
},
"details": "Uninitialized Use in V8 in Google Chrome prior to 123.0.6312.58 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-jcp9-wrqq-gg3h",
"modified": "2024-09-25T21:30:34Z",
"published": "2024-09-24T00:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7022"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/324690505"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JMRW-C58M-5H7J
Vulnerability from github – Published: 2026-07-30 03:31 – Updated: 2026-07-30 21:31Uninitialized Use in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-17668"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-30T01:16:28Z",
"severity": "MODERATE"
},
"details": "Uninitialized Use in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-jmrw-c58m-5h7j",
"modified": "2026-07-30T21:31:32Z",
"published": "2026-07-30T03:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17668"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/513134019"
}
],
"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-JPMV-R2RX-C4P9
Vulnerability from github – Published: 2026-07-30 03:31 – Updated: 2026-07-30 21:31Uninitialized Use in Skia in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Low)
{
"affected": [],
"aliases": [
"CVE-2026-17992"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-30T01:17:03Z",
"severity": "MODERATE"
},
"details": "Uninitialized Use in Skia in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Low)",
"id": "GHSA-jpmv-r2rx-c4p9",
"modified": "2026-07-30T21:31:43Z",
"published": "2026-07-30T03:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17992"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/520506316"
}
],
"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-JQQC-VV26-H55V
Vulnerability from github – Published: 2023-10-12 18:30 – Updated: 2025-11-04 21:30An information disclosure vulnerability exists in the ClientConnect() functionality of SoftEther VPN 5.01.9674. A specially crafted network packet can lead to a disclosure of sensitive information. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2023-31192"
],
"database_specific": {
"cwe_ids": [
"CWE-457",
"CWE-908"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-12T16:15:11Z",
"severity": "MODERATE"
},
"details": "An information disclosure vulnerability exists in the ClientConnect() functionality of SoftEther VPN 5.01.9674. A specially crafted network packet can lead to a disclosure of sensitive information. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.",
"id": "GHSA-jqqc-vv26-h55v",
"modified": "2025-11-04T21:30:44Z",
"published": "2023-10-12T18:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31192"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1768"
},
{
"type": "WEB",
"url": "https://www.softether.org/9-about/News/904-SEVPN202301"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1768"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-JVCH-X2XH-P75V
Vulnerability from github – Published: 2026-04-09 00:32 – Updated: 2026-04-13 21:30Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-5888"
],
"database_specific": {
"cwe_ids": [
"CWE-457"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-08T22:16:28Z",
"severity": "MODERATE"
},
"details": "Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-jvch-x2xh-p75v",
"modified": "2026-04-13T21:30:37Z",
"published": "2026-04-09T00:32:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5888"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/486506202"
}
],
"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"
}
]
}
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.