CWE-330
DiscouragedUse of Insufficiently Random Values
Abstraction: Class · Status: Stable
The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.
468 vulnerabilities reference this CWE, most recent first.
GHSA-5WG5-MF39-8MH8
Vulnerability from github – Published: 2025-12-10 09:30 – Updated: 2026-05-28 15:39Predictable default Wi-Fi Password in Access Point functionality in EZCast Pro II version 1.17478.146 allows attackers in Wi-Fi range to gain access to the dongle by calculating the default password from observable device identifiers
{
"affected": [],
"aliases": [
"CVE-2025-13955"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-10T09:15:46Z",
"severity": "CRITICAL"
},
"details": "Predictable default Wi-Fi Password in Access Point functionality in\u00a0EZCast Pro II version 1.17478.146\u00a0allows attackers in Wi-Fi range to gain access to the dongle by calculating the default password from observable device identifiers",
"id": "GHSA-5wg5-mf39-8mh8",
"modified": "2026-05-28T15:39:37Z",
"published": "2025-12-10T09:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13955"
},
{
"type": "WEB",
"url": "https://www.ncsc.admin.ch/ncsc/en/home/infos-fuer/infos-it-spezialisten/themen/schwachstelle-melden/cvd-cases/cvd-case-1-test.html"
},
{
"type": "WEB",
"url": "https://www.nimbletech.com.tw/index.php/release-note"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:L/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-5WM2-V84Q-JW9V
Vulnerability from github – Published: 2023-10-10 18:31 – Updated: 2024-04-04 08:29An issue was discovered in Ethernut Nut/OS 5.1. The code that generates Initial Sequence Numbers (ISNs) for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing ones or spoof future ones. While the ISN generator seems to adhere to RFC 793 (where a global 32-bit counter is incremented roughly every 4 microseconds), proper ISN generation should aim to follow at least the specifications outlined in RFC 6528.
{
"affected": [],
"aliases": [
"CVE-2020-27213"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-10T17:15:10Z",
"severity": "HIGH"
},
"details": "An issue was discovered in Ethernut Nut/OS 5.1. The code that generates Initial Sequence Numbers (ISNs) for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing ones or spoof future ones. While the ISN generator seems to adhere to RFC 793 (where a global 32-bit counter is incremented roughly every 4 microseconds), proper ISN generation should aim to follow at least the specifications outlined in RFC 6528.",
"id": "GHSA-5wm2-v84q-jw9v",
"modified": "2024-04-04T08:29:45Z",
"published": "2023-10-10T18:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27213"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01"
},
{
"type": "WEB",
"url": "https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks"
},
{
"type": "WEB",
"url": "http://lists.egnite.de/mailman/listinfo/en-nut-announce"
},
{
"type": "WEB",
"url": "http://www.ethernut.de/en/download/index.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-5WWR-75FF-WP92
Vulnerability from github – Published: 2022-05-13 01:50 – Updated: 2022-05-13 01:50POSIM EVO 15.13 for Windows includes an "Emergency Override" administrative account that may be accessed through POSIM's "override" feature. This Override prompt expects a code that is computed locally using a deterministic algorithm. This code may be generated by an attacker and used to bypass any POSIM EVO login prompt.
{
"affected": [],
"aliases": [
"CVE-2018-15807"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-08-23T20:29:00Z",
"severity": "HIGH"
},
"details": "POSIM EVO 15.13 for Windows includes an \"Emergency Override\" administrative account that may be accessed through POSIM\u0027s \"override\" feature. This Override prompt expects a code that is computed locally using a deterministic algorithm. This code may be generated by an attacker and used to bypass any POSIM EVO login prompt.",
"id": "GHSA-5wwr-75ff-wp92",
"modified": "2022-05-13T01:50:13Z",
"published": "2022-05-13T01:50:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15807"
},
{
"type": "WEB",
"url": "https://versprite.com/advisories/posim-evo-for-windows"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-62F9-2V42-4H92
Vulnerability from github – Published: 2022-05-13 01:07 – Updated: 2022-05-13 01:07An Elevation of Privilege vulnerability exists in the way Azure IoT Java SDK generates symmetric keys for encryption, allowing an attacker to predict the randomness of the key, aka 'Azure IoT Java SDK Elevation of Privilege Vulnerability'.
{
"affected": [],
"aliases": [
"CVE-2019-0729"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-03-05T23:29:00Z",
"severity": "CRITICAL"
},
"details": "An Elevation of Privilege vulnerability exists in the way Azure IoT Java SDK generates symmetric keys for encryption, allowing an attacker to predict the randomness of the key, aka \u0027Azure IoT Java SDK Elevation of Privilege Vulnerability\u0027.",
"id": "GHSA-62f9-2v42-4h92",
"modified": "2022-05-13T01:07:56Z",
"published": "2022-05-13T01:07:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-0729"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0729"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/106966"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-63H7-PM69-6V2J
Vulnerability from github – Published: 2022-05-24 17:16 – Updated: 2024-03-21 03:33React Native Bluetooth Scan in Bluezone 1.0.0 uses six-character alphanumeric IDs, which might make it easier for remote attackers to interfere with COVID-19 contact tracing by using many IDs.
{
"affected": [],
"aliases": [
"CVE-2020-12270"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-04-27T04:15:00Z",
"severity": "MODERATE"
},
"details": "React Native Bluetooth Scan in Bluezone 1.0.0 uses six-character alphanumeric IDs, which might make it easier for remote attackers to interfere with COVID-19 contact tracing by using many IDs.",
"id": "GHSA-63h7-pm69-6v2j",
"modified": "2024-03-21T03:33:54Z",
"published": "2022-05-24T17:16:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12270"
},
{
"type": "WEB",
"url": "https://bluezone.ai/CVE"
},
{
"type": "WEB",
"url": "https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/CHANGELOG.md"
},
{
"type": "WEB",
"url": "https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd2520bbb3/package.json#L27"
},
{
"type": "WEB",
"url": "https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/AndroidManifest.xml#L11-L12"
},
{
"type": "WEB",
"url": "https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/BluezonerIdGenerator.java#L18-L28"
},
{
"type": "WEB",
"url": "https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50b6e62a7593a8397c2dab/lib/android/src/main/java/com/scan/TraceCovidModule.java#L98"
},
{
"type": "WEB",
"url": "https://vnhacker.blogspot.com/2020/04/vietnams-contact-tracing-app_26.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-63QG-58C5-WRFF
Vulnerability from github – Published: 2022-05-13 01:44 – Updated: 2022-05-13 01:44Remote Information Disclosure and Escalation of Privileges in ManageEngine Desktop Central MSP 10.0.137 allows attackers to download unencrypted XML files containing all data for configuration policies via a predictable /client-data//collections/##/usermgmt.xml URL, as demonstrated by passwords and Wi-Fi keys. This is fixed in build 100157.
{
"affected": [],
"aliases": [
"CVE-2017-16924"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-02-19T04:29:00Z",
"severity": "CRITICAL"
},
"details": "Remote Information Disclosure and Escalation of Privileges in ManageEngine Desktop Central MSP 10.0.137 allows attackers to download unencrypted XML files containing all data for configuration policies via a predictable /client-data/\u003cclient_id\u003e/collections/##/usermgmt.xml URL, as demonstrated by passwords and Wi-Fi keys. This is fixed in build 100157.",
"id": "GHSA-63qg-58c5-wrff",
"modified": "2022-05-13T01:44:13Z",
"published": "2022-05-13T01:44:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16924"
},
{
"type": "WEB",
"url": "https://github.com/snoonan77/security-research/blob/master/CVE-2017-16924"
},
{
"type": "WEB",
"url": "https://www.manageengine.com/desktop-management-msp/password-encryption-policy-violation.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-63V9-V58H-69GM
Vulnerability from github – Published: 2022-05-24 16:57 – Updated: 2024-04-04 02:04Usage of hard-coded magic number for calculating heap guard bytes can allow users to corrupt heap blocks without heap algorithm knowledge in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables in MDM9205, MDM9206, MDM9607, MDM9615, MDM9625, MDM9635M, MDM9655, MSM8909W, MSM8996AU, QCS605, Qualcomm 215, SD 210/SD 212/SD 205, SD 410/12, SD 425, SD 427, SD 430, SD 435, SD 439 / SD 429, SD 450, SD 625, SD 632, SD 636, SD 650/52, SD 665, SD 675, SD 712 / SD 710 / SD 670, SD 730, SD 820, SD 820A, SD 835, SD 845 / SD 850, SD 855, SD 8CX, SDA660, SDM439, SDM630, SDM660, Snapdragon_High_Med_2016, SXR1130
{
"affected": [],
"aliases": [
"CVE-2019-2294"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-09-30T16:15:00Z",
"severity": "CRITICAL"
},
"details": "Usage of hard-coded magic number for calculating heap guard bytes can allow users to corrupt heap blocks without heap algorithm knowledge in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice \u0026 Music, Snapdragon Wearables in MDM9205, MDM9206, MDM9607, MDM9615, MDM9625, MDM9635M, MDM9655, MSM8909W, MSM8996AU, QCS605, Qualcomm 215, SD 210/SD 212/SD 205, SD 410/12, SD 425, SD 427, SD 430, SD 435, SD 439 / SD 429, SD 450, SD 625, SD 632, SD 636, SD 650/52, SD 665, SD 675, SD 712 / SD 710 / SD 670, SD 730, SD 820, SD 820A, SD 835, SD 845 / SD 850, SD 855, SD 8CX, SDA660, SDM439, SDM630, SDM660, Snapdragon_High_Med_2016, SXR1130",
"id": "GHSA-63v9-v58h-69gm",
"modified": "2024-04-04T02:04:17Z",
"published": "2022-05-24T16:57:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-2294"
},
{
"type": "WEB",
"url": "https://www.qualcomm.com/company/product-security/bulletins"
}
],
"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-64QF-4R7V-W6J5
Vulnerability from github – Published: 2022-11-16 12:00 – Updated: 2022-11-21 15:30A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to access sensitive information. This vulnerability is due to missing authorization for certain resources in the web-based management interface together with insufficient entropy in these resource names. An attacker could exploit this vulnerability by sending a series of HTTPS requests to an affected device to enumerate resources on the device. A successful exploit could allow the attacker to retrieve sensitive information from the device.
{
"affected": [],
"aliases": [
"CVE-2022-20941"
],
"database_specific": {
"cwe_ids": [
"CWE-330",
"CWE-331",
"CWE-334"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-15T21:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to access sensitive information. This vulnerability is due to missing authorization for certain resources in the web-based management interface together with insufficient entropy in these resource names. An attacker could exploit this vulnerability by sending a series of HTTPS requests to an affected device to enumerate resources on the device. A successful exploit could allow the attacker to retrieve sensitive information from the device.",
"id": "GHSA-64qf-4r7v-w6j5",
"modified": "2022-11-21T15:30:21Z",
"published": "2022-11-16T12:00:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20941"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-info-disc-UghNRRhP"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-info-disc-UghNRRhP"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-69CG-852P-W88R
Vulnerability from github – Published: 2022-05-24 16:58 – Updated: 2024-04-04 02:10The token generator in index.php in Centreon Web before 2.8.27 is predictable.
{
"affected": [],
"aliases": [
"CVE-2019-17105"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-08T15:15:00Z",
"severity": "MODERATE"
},
"details": "The token generator in index.php in Centreon Web before 2.8.27 is predictable.",
"id": "GHSA-69cg-852p-w88r",
"modified": "2024-04-04T02:10:08Z",
"published": "2022-05-24T16:58:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17105"
},
{
"type": "WEB",
"url": "https://github.com/centreon/centreon/pull/7100"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2019/10/08/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2019/10/09/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-69FX-MVCM-V5G3
Vulnerability from github – Published: 2026-02-24 18:31 – Updated: 2026-02-24 18:31Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 generate predictable numeric session identifiers in the web management interface. An attacker can guess valid session IDs and hijack authenticated sessions.
{
"affected": [],
"aliases": [
"CVE-2026-27515"
],
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-24T16:24:08Z",
"severity": "CRITICAL"
},
"details": "Binardat 10G08-0800GSM network switch firmware versions prior to\u00a0V300SP10260209 generate predictable numeric session identifiers in the web management interface. An attacker can guess valid session IDs and hijack authenticated sessions.",
"id": "GHSA-69fx-mvcm-v5g3",
"modified": "2026-02-24T18:31:02Z",
"published": "2026-02-24T18:31:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27515"
},
{
"type": "WEB",
"url": "https://www.binardat.com/products/8-port-10-gigabit-sfp-managed-switch,-support-1g-sfp-and-10g-sfp-module,-160gbps-bandwidth,-l3-web-managed,-metal-fanless-fiber-binardat-network-switch"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/binardat-10g08-0800gsm-network-switch-predictable-session-identifiers"
}
],
"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:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
Mitigation
- Use a well-vetted algorithm that is currently considered to be strong by experts in the field, and select well-tested implementations with adequate length seeds.
- In general, if a pseudo-random number generator is not advertised as being cryptographically secure, then it is probably a statistical PRNG and should not be used in security-sensitive contexts.
- Pseudo-random number generators can produce predictable numbers if the generator is known and the seed can be guessed. A 256-bit seed is a good starting point for producing a "random enough" number.
Mitigation
Consider a PRNG that re-seeds itself as needed from high quality pseudo-random output sources, such as hardware devices.
Mitigation MIT-2
Strategy: Libraries or Frameworks
Use products or modules that conform to FIPS 140-2 [REF-267] to avoid obvious entropy problems. Consult FIPS 140-2 Annex C ("Approved Random Number Generators").
CAPEC-112: Brute Force
In this attack, some asset (information, functionality, identity, etc.) is protected by a finite secret value. The attacker attempts to gain access to this asset by using trial-and-error to exhaustively explore all the possible secret values in the hope of finding the secret (or a value that is functionally equivalent) that will unlock the asset.
CAPEC-485: Signature Spoofing by Key Recreation
An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
CAPEC-59: Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.