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.
5029 vulnerabilities reference this CWE, most recent first.
GHSA-73QM-XVQ7-VQWG
Vulnerability from github – Published: 2024-04-09 09:31 – Updated: 2024-10-02 06:30An unauthenticated remote attacker who is aware of a MQTT topic name can send and receive messages, including GET/SET configuration commands, reboot commands and firmware updates.
{
"affected": [],
"aliases": [
"CVE-2023-1083"
],
"database_specific": {
"cwe_ids": [
"CWE-284",
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-09T09:15:19Z",
"severity": "CRITICAL"
},
"details": "An unauthenticated remote attacker who is aware of a\u00a0MQTT topic name can send and receive messages, including GET/SET configuration commands, reboot commands and firmware updates.\n",
"id": "GHSA-73qm-xvq7-vqwg",
"modified": "2024-10-02T06:30:26Z",
"published": "2024-04-09T09:31:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1083"
},
{
"type": "WEB",
"url": "https://cert.vde.com/en/advisories/VDE-2024-009"
}
],
"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-73R7-73GP-J7MV
Vulnerability from github – Published: 2025-06-27 00:31 – Updated: 2025-06-27 12:31Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation G-50 Version 3.37 and prior, G-50-W Version 3.37 and prior, G-50A Version 3.37 and prior, GB-50 Version 3.37 and prior, GB-50A Version 3.37 and prior, GB-24A Version 9.12 and prior, G-150AD Version 3.21 and prior, AG-150A-A Version 3.21 and prior, AG-150A-J Version 3.21 and prior, GB-50AD Version 3.21 and prior, GB-50ADA-A Version 3.21 and prior, GB-50ADA-J Version 3.21 and prior, EB-50GU-A Version 7.11 and prior, EB-50GU-J Version 7.11 and prior, AE-200J Version 8.01 and prior, AE-200A Version 8.01 and prior, AE-200E Version 8.01 and prior, AE-50J Version 8.01 and prior, AE-50A Version 8.01 and prior, AE-50E Version 8.01 and prior, EW-50J Version 8.01 and prior, EW-50A Version 8.01 and prior, EW-50E Version 8.01 and prior, TE-200A Version 8.01 and prior, TE-50A Version 8.01 and prior, TW-50A Version 8.01 and prior, and CMS-RMD-J Version 1.40 and prior allows a remote unauthenticated attacker to bypass authentication and then control the air conditioning systems illegally, or disclose information in them by exploiting this vulnerability. In addition, the attacker may tamper with firmware for them using the disclosed information.
{
"affected": [],
"aliases": [
"CVE-2025-3699"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-26T23:15:22Z",
"severity": "CRITICAL"
},
"details": "Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation G-50 Version 3.37 and prior, G-50-W Version 3.37 and prior, G-50A Version 3.37 and prior, GB-50 Version 3.37 and prior, GB-50A Version 3.37 and prior, GB-24A Version 9.12 and prior, G-150AD Version 3.21 and prior, AG-150A-A Version 3.21 and prior, AG-150A-J Version 3.21 and prior, GB-50AD Version 3.21 and prior, GB-50ADA-A Version 3.21 and prior, GB-50ADA-J Version 3.21 and prior, EB-50GU-A Version 7.11 and prior, EB-50GU-J Version 7.11 and prior, AE-200J Version 8.01 and prior, AE-200A Version 8.01 and prior, AE-200E Version 8.01 and prior, AE-50J Version 8.01 and prior, AE-50A Version 8.01 and prior, AE-50E Version 8.01 and prior, EW-50J Version 8.01 and prior, EW-50A Version 8.01 and prior, EW-50E Version 8.01 and prior, TE-200A Version 8.01 and prior, TE-50A Version 8.01 and prior, TW-50A Version 8.01 and prior, and CMS-RMD-J Version 1.40 and prior allows a remote unauthenticated attacker to bypass authentication and then control the air conditioning systems illegally, or disclose information in them by exploiting this vulnerability. In addition, the attacker may tamper with firmware for them using the disclosed information.",
"id": "GHSA-73r7-73gp-j7mv",
"modified": "2025-06-27T12:31:14Z",
"published": "2025-06-27T00:31:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3699"
},
{
"type": "WEB",
"url": "https://jvn.jp/vu/JVNVU96471539"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-177-01"
},
{
"type": "WEB",
"url": "https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-004_en.pdf"
}
],
"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-73V5-RHGG-73MQ
Vulnerability from github – Published: 2024-02-06 12:30 – Updated: 2024-02-06 12:30In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible
{
"affected": [],
"aliases": [
"CVE-2024-23917"
],
"database_specific": {
"cwe_ids": [
"CWE-288",
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-06T10:15:09Z",
"severity": "CRITICAL"
},
"details": "In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible",
"id": "GHSA-73v5-rhgg-73mq",
"modified": "2024-02-06T12:30:30Z",
"published": "2024-02-06T12:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-23917"
},
{
"type": "WEB",
"url": "https://www.jetbrains.com/privacy-security/issues-fixed"
}
],
"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-743V-HVCX-FJH9
Vulnerability from github – Published: 2025-06-26 21:31 – Updated: 2025-06-26 21:31Successful exploitation of the vulnerability could allow an unauthenticated attacker to upload firmware through a public update page, potentially leading to backdoor installation or privilege escalation.
{
"affected": [],
"aliases": [
"CVE-2025-48469"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-24T03:15:34Z",
"severity": "CRITICAL"
},
"details": "Successful exploitation of the vulnerability could allow an unauthenticated attacker to upload firmware through a public update page, potentially leading to backdoor installation or privilege escalation.",
"id": "GHSA-743v-hvcx-fjh9",
"modified": "2025-06-26T21:31:04Z",
"published": "2025-06-26T21:31:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48469"
},
{
"type": "WEB",
"url": "https://jro.sg/CVEs/CVE-2025-48469"
},
{
"type": "WEB",
"url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2025-061"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-7459-M7QW-M8FW
Vulnerability from github – Published: 2024-10-08 18:33 – Updated: 2024-10-08 18:33Missing authentication for critical function in Visual Studio Code extension for Arduino allows an unauthenticated attacker to perform remote code execution through network attack vector.
{
"affected": [],
"aliases": [
"CVE-2024-43488"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-08T18:15:11Z",
"severity": "HIGH"
},
"details": "Missing authentication for critical function in Visual Studio Code extension for Arduino allows an unauthenticated attacker to perform remote code execution through network attack vector.",
"id": "GHSA-7459-m7qw-m8fw",
"modified": "2024-10-08T18:33:15Z",
"published": "2024-10-08T18:33:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43488"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43488"
}
],
"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-747H-6GH8-P8V2
Vulnerability from github – Published: 2026-09-02 03:31 – Updated: 2026-09-02 03:31PikiwiDB (Pika) v3.5.7 exposes an internal protobuf replication server on a port derived from the client port plus 2000 (e.g. 11221 when the default client port 9221 is used) that does not authenticate incoming requests. Although requirepass is intended to gate replication — a slave presents it as masterauth inside its MetaSync request — only the MetaSync handler (HandleMetaSyncRequest) validates it; the frame dispatcher (DealMessage) does not require a completed or attempted MetaSync before routing other message types to their handlers. As a result, an unauthenticated remote attacker can connect directly to the replication port and issue TrySync, DBSync, BinlogSync, and RemoveSlaveNode requests, obtaining the full-sync snapshot and live write stream and removing replica nodes, even when requirepass is configured.
{
"affected": [],
"aliases": [
"CVE-2026-84700"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-02T01:17:25Z",
"severity": "HIGH"
},
"details": "PikiwiDB (Pika) v3.5.7 exposes an internal protobuf replication server on a port derived from the client port plus 2000 (e.g. 11221 when the default client port 9221 is used) that does not authenticate incoming requests. Although requirepass is intended to gate replication \u2014 a slave presents it as masterauth inside its MetaSync request \u2014 only the MetaSync handler (HandleMetaSyncRequest) validates it; the frame dispatcher (DealMessage) does not require a completed or attempted MetaSync before routing other message types to their handlers. As a result, an unauthenticated remote attacker can connect directly to the replication port and issue TrySync, DBSync, BinlogSync, and RemoveSlaveNode requests, obtaining the full-sync snapshot and live write stream and removing replica nodes, even when requirepass is configured.",
"id": "GHSA-747h-6gh8-p8v2",
"modified": "2026-09-02T03:31:12Z",
"published": "2026-09-02T03:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84700"
},
{
"type": "WEB",
"url": "https://github.com/OpenAtomFoundation/pikiwidb/issues/3270"
},
{
"type": "WEB",
"url": "https://github.com/OpenAtomFoundation/pikiwidb"
},
{
"type": "WEB",
"url": "https://github.com/OpenAtomFoundation/pikiwidb/blob/v3.5.7/src/pika_repl_server_conn.cc"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/pika-unauthenticated-replication-access-via-internal-protobuf-port"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/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-747Q-WQ4P-22G3
Vulnerability from github – Published: 2022-11-03 19:00 – Updated: 2022-11-04 19:01Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this feature is enabled, GRUB requires a password to access the GRUB command-line, modify kernel command-line arguments, or boot non-default OSTree deployments. Recent Fedora CoreOS releases have a misconfiguration which allows booting non-default OSTree deployments without entering a password. This allows someone with access to the GRUB menu to boot into an older version of Fedora CoreOS, reverting any security fixes that have recently been applied to the machine. A password is still required to modify kernel command-line arguments and to access the GRUB command line.
{
"affected": [],
"aliases": [
"CVE-2022-3675"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-306",
"CWE-862"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-03T18:15:00Z",
"severity": "MODERATE"
},
"details": "Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this feature is enabled, GRUB requires a password to access the GRUB command-line, modify kernel command-line arguments, or boot non-default OSTree deployments. Recent Fedora CoreOS releases have a misconfiguration which allows booting non-default OSTree deployments without entering a password. This allows someone with access to the GRUB menu to boot into an older version of Fedora CoreOS, reverting any security fixes that have recently been applied to the machine. A password is still required to modify kernel command-line arguments and to access the GRUB command line.",
"id": "GHSA-747q-wq4p-22g3",
"modified": "2022-11-04T19:01:17Z",
"published": "2022-11-03T19:00:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3675"
},
{
"type": "WEB",
"url": "https://github.com/coreos/fedora-coreos-tracker/issues/1333"
},
{
"type": "WEB",
"url": "https://docs.fedoraproject.org/en-US/fedora-coreos/grub-password"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/coreos-status@lists.fedoraproject.org/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-747V-RWMR-3QWH
Vulnerability from github – Published: 2026-09-04 21:31 – Updated: 2026-09-08 15:31No authentication exists in the MQTT service of Trueview 6.0.23.4. The MQTT broker accepts client connections on TCP port 1883 without requiring authentication, allowing a remote attacker with network access to establish an MQTT session and perform unauthorized publish or subscribe operations.
{
"affected": [],
"aliases": [
"CVE-2026-79391"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-04T20:17:28Z",
"severity": "CRITICAL"
},
"details": "No authentication exists in the MQTT service of Trueview 6.0.23.4. The MQTT broker accepts client connections on TCP port 1883 without requiring authentication, allowing a remote attacker with network access to establish an MQTT session and perform unauthorized publish or subscribe operations.",
"id": "GHSA-747v-rwmr-3qwh",
"modified": "2026-09-08T15:31:36Z",
"published": "2026-09-04T21:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79391"
},
{
"type": "WEB",
"url": "https://github.com/EmbdCDACHyd/CVE/blob/main/CVE-2026-79391/README.md"
}
],
"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-74HH-VRFX-9235
Vulnerability from github – Published: 2026-02-18 00:30 – Updated: 2026-02-18 00:30The affected products are vulnerable to an unauthenticated API endpoint exposure, which may allow an attacker to remotely change the "forgot password" recovery email address.
{
"affected": [],
"aliases": [
"CVE-2026-1670"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-17T23:16:19Z",
"severity": "CRITICAL"
},
"details": "The affected products are vulnerable to an unauthenticated API endpoint exposure, which may allow an attacker to remotely change the \"forgot password\" recovery email address.",
"id": "GHSA-74hh-vrfx-9235",
"modified": "2026-02-18T00:30:16Z",
"published": "2026-02-18T00:30:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1670"
},
{
"type": "WEB",
"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-048-04.json"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-048-04"
},
{
"type": "WEB",
"url": "https://www.honeywell.com/us/en/contact/support"
}
],
"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-74HW-MJGM-CVV4
Vulnerability from github – Published: 2023-08-15 21:30 – Updated: 2024-04-04 06:58Broadcom RAID Controller Web server (nginx) is serving private server-side files without any authentication on Linux
{
"affected": [],
"aliases": [
"CVE-2023-4335"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-15T19:15:11Z",
"severity": "HIGH"
},
"details": "Broadcom RAID Controller Web server (nginx) is serving private server-side files without any authentication on Linux",
"id": "GHSA-74hw-mjgm-cvv4",
"modified": "2024-04-04T06:58:29Z",
"published": "2023-08-15T21:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4335"
},
{
"type": "WEB",
"url": "https://www.broadcom.com/support/resources/product-security-center"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"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.