CWE-306
AllowedMissing Authentication for Critical Function
Abstraction: Base · Status: Draft
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
3452 vulnerabilities reference this CWE, most recent first.
GHSA-RVFP-J42C-8VRC
Vulnerability from github – Published: 2023-07-04 00:31 – Updated: 2024-04-04 05:21Hero Qubo HCD01_02_V1.38_20220125 devices allow TELNET access with root privileges by default, without a password.
{
"affected": [],
"aliases": [
"CVE-2023-22906"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-04T00:15:09Z",
"severity": "HIGH"
},
"details": "Hero Qubo HCD01_02_V1.38_20220125 devices allow TELNET access with root privileges by default, without a password.",
"id": "GHSA-rvfp-j42c-8vrc",
"modified": "2024-04-04T05:21:04Z",
"published": "2023-07-04T00:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-22906"
},
{
"type": "WEB",
"url": "https://github.com/nonamecoder/CVE-2023-22906"
},
{
"type": "WEB",
"url": "https://twitter.com/ayyappan162010/status/1610764707753000960"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RVFV-GFCW-5592
Vulnerability from github – Published: 2022-05-24 16:45 – Updated: 2022-05-24 16:45An exploitable improper access control vulnerability exists in the bluetooth low energy functionality of Winco Fireworks FireFly FW-1007 V2.0. An attacker can connect to the device to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2019-5014"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-05-08T17:29:00Z",
"severity": "MODERATE"
},
"details": "An exploitable improper access control vulnerability exists in the bluetooth low energy functionality of Winco Fireworks FireFly FW-1007 V2.0. An attacker can connect to the device to trigger this vulnerability.",
"id": "GHSA-rvfv-gfcw-5592",
"modified": "2022-05-24T16:45:22Z",
"published": "2022-05-24T16:45:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5014"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0772"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RVGX-9F8H-XPR7
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Missing authentication for critical function in Windows Server Update Service allows an authorized attacker to elevate privileges over a network.
{
"affected": [],
"aliases": [
"CVE-2026-50444"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:48Z",
"severity": "HIGH"
},
"details": "Missing authentication for critical function in Windows Server Update Service allows an authorized attacker to elevate privileges over a network.",
"id": "GHSA-rvgx-9f8h-xpr7",
"modified": "2026-07-14T18:32:24Z",
"published": "2026-07-14T18:32:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50444"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50444"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RVP9-HFHR-8GGG
Vulnerability from github – Published: 2025-06-20 15:30 – Updated: 2025-07-08 15:31An issue was discovered on COROS PACE 3 devices through 3.0808.0. The BLE implementation of the COROS smartwatch does not support LE Secure Connections and instead enforces BLE Legacy Pairing. In BLE Legacy Pairing, the Short-Term Key (STK) can be easily guessed. This requires knowledge of the Temporary Key (TK), which, in the case of the COROS Pace 3, is set to 0 due to the Just Works pairing method. An attacker within Bluetooth range can therefore perform sniffing attacks, allowing eavesdropping on the communication.
{
"affected": [],
"aliases": [
"CVE-2025-32876"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-20T14:15:27Z",
"severity": "MODERATE"
},
"details": "An issue was discovered on COROS PACE 3 devices through 3.0808.0. The BLE implementation of the COROS smartwatch does not support LE Secure Connections and instead enforces BLE Legacy Pairing. In BLE Legacy Pairing, the Short-Term Key (STK) can be easily guessed. This requires knowledge of the Temporary Key (TK), which, in the case of the COROS Pace 3, is set to 0 due to the Just Works pairing method. An attacker within Bluetooth range can therefore perform sniffing attacks, allowing eavesdropping on the communication.",
"id": "GHSA-rvp9-hfhr-8ggg",
"modified": "2025-07-08T15:31:45Z",
"published": "2025-06-20T15:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-32876"
},
{
"type": "WEB",
"url": "https://support.coros.com/hc/en-us/articles/20087694119828-COROS-PACE-3-Release-Notes"
},
{
"type": "WEB",
"url": "https://syss.de"
},
{
"type": "WEB",
"url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-023.txt"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-RW3Q-FV8Q-C2XF
Vulnerability from github – Published: 2023-07-06 21:15 – Updated: 2024-04-04 05:48Missing Authentication for Critical Function vulnerability in Honeywell OneWireless allows Authentication Bypass. This issue affects OneWireless version 322.1
{
"affected": [],
"aliases": [
"CVE-2022-4240"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-30T17:15:09Z",
"severity": "HIGH"
},
"details": "Missing Authentication for Critical Function vulnerability in Honeywell OneWireless allows Authentication Bypass.\u00a0This issue affects OneWireless version 322.1",
"id": "GHSA-rw3q-fv8q-c2xf",
"modified": "2024-04-04T05:48:13Z",
"published": "2023-07-06T21:15:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4240"
},
{
"type": "WEB",
"url": "https://process.honeywell.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-RW77-76P7-66X5
Vulnerability from github – Published: 2025-09-25 15:30 – Updated: 2026-01-30 06:30A missing authentication for critical function vulnerability in SUNNET Corporate Training Management System before 10.11 allows remote attackers to access deployment functionality without prior authentication.
{
"affected": [],
"aliases": [
"CVE-2025-54942"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-30T04:15:49Z",
"severity": "CRITICAL"
},
"details": "A missing authentication for critical function vulnerability in SUNNET Corporate Training Management System before 10.11 allows remote attackers to access deployment functionality without prior authentication.",
"id": "GHSA-rw77-76p7-66x5",
"modified": "2026-01-30T06:30:15Z",
"published": "2025-09-25T15:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54942"
},
{
"type": "WEB",
"url": "https://zuso.ai/advisory"
},
{
"type": "WEB",
"url": "https://zuso.ai/advisory/za-2025-10"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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"
}
]
}
GHSA-RWG6-5V43-7MQ2
Vulnerability from github – Published: 2024-04-09 18:30 – Updated: 2024-04-09 18:30Windows Update Stack Elevation of Privilege Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-26235"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-09T17:15:44Z",
"severity": "HIGH"
},
"details": "Windows Update Stack Elevation of Privilege Vulnerability",
"id": "GHSA-rwg6-5v43-7mq2",
"modified": "2024-04-09T18:30:26Z",
"published": "2024-04-09T18:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26235"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26235"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RWP9-5G7Q-73Q3
Vulnerability from github – Published: 2026-01-07 12:31 – Updated: 2026-01-07 19:31OpenFlagr versions prior to and including 1.1.18 contain an authentication bypass vulnerability in the HTTP middleware. Due to improper handling of path normalization in the whitelist logic, crafted requests can bypass authentication and access protected API endpoints without valid credentials. Unauthorized access may allow modification of feature flags and export of sensitive data.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/openflagr/flagr"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.0.0-20251009103504-fe83dc87aa40"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-0650"
],
"database_specific": {
"cwe_ids": [
"CWE-306",
"CWE-425"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-07T19:31:31Z",
"nvd_published_at": "2026-01-07T12:17:07Z",
"severity": "CRITICAL"
},
"details": "OpenFlagr versions prior to and including 1.1.18 contain an authentication bypass vulnerability in the HTTP middleware. Due to improper handling of path normalization in the whitelist logic, crafted requests can bypass authentication and access protected API endpoints without valid credentials. Unauthorized access may allow modification of feature flags and export of sensitive data.",
"id": "GHSA-rwp9-5g7q-73q3",
"modified": "2026-01-07T19:31:31Z",
"published": "2026-01-07T12:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0650"
},
{
"type": "WEB",
"url": "https://github.com/openflagr/flagr/commit/fe83dc87aa404a57554aa5839ac450f55c203570"
},
{
"type": "WEB",
"url": "https://dreyand.rs/code%20review/golang/2026/01/03/0day-speedrun-openflagr-less-1118-authentication-bypass"
},
{
"type": "PACKAGE",
"url": "https://github.com/openflagr/flagr"
},
{
"type": "WEB",
"url": "https://github.com/openflagr/flagr/releases/tag/1.1.19"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/openflagr-authentication-bypass-via-prefix-whitelist-path-normalization"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OpenFlagr contains an authentication bypass vulnerability in the HTTP middleware"
}
GHSA-RX6M-VH7Q-5563
Vulnerability from github – Published: 2025-11-11 21:30 – Updated: 2025-11-11 21:30A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA2) (All versions), LOGO! 12/24RCEo (6ED1052-2MD08-0BA2) (All versions), LOGO! 230RCE (6ED1052-1FB08-0BA2) (All versions), LOGO! 230RCEo (6ED1052-2FB08-0BA2) (All versions), LOGO! 24CE (6ED1052-1CC08-0BA2) (All versions), LOGO! 24CEo (6ED1052-2CC08-0BA2) (All versions), LOGO! 24RCE (6ED1052-1HB08-0BA2) (All versions), LOGO! 24RCEo (6ED1052-2HB08-0BA2) (All versions), SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA2) (All versions), SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA2) (All versions), SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA2) (All versions), SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA2) (All versions), SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA2) (All versions), SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA2) (All versions), SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA2) (All versions), SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA2) (All versions). Affected devices do not conduct certain validations when interacting with them. This could allow an unauthenticated remote attacker to change time of the device, which means the device could behave differently.
{
"affected": [],
"aliases": [
"CVE-2025-40817"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-11T21:15:38Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA2) (All versions), LOGO! 12/24RCEo (6ED1052-2MD08-0BA2) (All versions), LOGO! 230RCE (6ED1052-1FB08-0BA2) (All versions), LOGO! 230RCEo (6ED1052-2FB08-0BA2) (All versions), LOGO! 24CE (6ED1052-1CC08-0BA2) (All versions), LOGO! 24CEo (6ED1052-2CC08-0BA2) (All versions), LOGO! 24RCE (6ED1052-1HB08-0BA2) (All versions), LOGO! 24RCEo (6ED1052-2HB08-0BA2) (All versions), SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA2) (All versions), SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA2) (All versions), SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA2) (All versions), SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA2) (All versions), SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA2) (All versions), SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA2) (All versions), SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA2) (All versions), SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA2) (All versions). Affected devices do not conduct certain validations when interacting with them. This could allow an unauthenticated remote attacker to change time of the device, which means the device could behave differently.",
"id": "GHSA-rx6m-vh7q-5563",
"modified": "2025-11-11T21:30:28Z",
"published": "2025-11-11T21:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40817"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-267056.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/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"
}
]
}
GHSA-RX8F-Q5HR-3GM3
Vulnerability from github – Published: 2025-03-27 09:30 – Updated: 2025-03-27 09:30A unauthorized access vulnerability exists in the Xiaomi phone framework. The vulnerability is caused by improper validation and can be exploited by attackers to Access sensitive methods.
{
"affected": [],
"aliases": [
"CVE-2024-45356"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-27T08:15:16Z",
"severity": "HIGH"
},
"details": "A unauthorized access vulnerability exists in the Xiaomi phone framework. The vulnerability is caused by improper validation and can be exploited by attackers to Access sensitive methods.",
"id": "GHSA-rx8f-q5hr-3gm3",
"modified": "2025-03-27T09:30:31Z",
"published": "2025-03-27T09:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45356"
},
{
"type": "WEB",
"url": "https://trust.mi.com/zh-CN/misrc/bulletins/advisory?cveId=554"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
- Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
- Identify all potential communication channels, or other means of interaction with the software, to ensure that all channels are appropriately protected, including those channels that are assumed to be accessible only by authorized parties. Developers sometimes perform authentication at the primary channel, but open up a secondary channel that is assumed to be private. For example, a login mechanism may be listening on one network port, but after successful authentication, it may open up a second port where it waits for the connection, but avoids authentication because it assumes that only the authenticated party will connect to the port.
- In general, if the software or protocol allows a single session or user state to persist across multiple connections or channels, authentication and appropriate credential management need to be used throughout.
Mitigation MIT-15
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation
- Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment. These capabilities may avoid common weaknesses that are unique to authentication; support automatic auditing and tracking; and make it easier to provide a clear separation between authentication tasks and authorization tasks.
- In environments such as the World Wide Web, the line between authentication and authorization is sometimes blurred. If custom authentication routines are required instead of those provided by the server, then these routines must be applied to every single page, since these pages could be requested directly.
Mitigation MIT-4.5
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator [REF-45].
Mitigation
When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to require strong authentication for users who should be allowed to access the data [REF-1297] [REF-1298] [REF-1302].
CAPEC-12: Choosing Message Identifier
This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.
CAPEC-166: Force the System to Reset Values
An attacker forces the target into a previous state in order to leverage potential weaknesses in the target dependent upon a prior configuration or state-dependent factors. Even in cases where an attacker may not be able to directly control the configuration of the targeted application, they may be able to reset the configuration to a prior state since many applications implement reset functions.
CAPEC-216: Communication Channel Manipulation
An adversary manipulates a setting or parameter on communications channel in order to compromise its security. This can result in information exposure, insertion/removal of information from the communications stream, and/or potentially system compromise.
CAPEC-36: Using Unpublished Interfaces or Functionality
An adversary searches for and invokes interfaces or functionality that the target system designers did not intend to be publicly available. If interfaces fail to authenticate requests, the attacker may be able to invoke functionality they are not authorized for.
CAPEC-62: Cross Site Request Forgery
An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.