Common Weakness Enumeration

CWE-288

Allowed

Authentication Bypass Using an Alternate Path or Channel

Abstraction: Base · Status: Incomplete

The product requires authentication, but the product has an alternate path or channel that does not require authentication.

1173 vulnerabilities reference this CWE, most recent first.

CVE-2026-20459 (GCVE-0-2026-20459)

Vulnerability from cvelistv5 – Published: 2026-07-01 03:14 – Updated: 2026-07-01 10:39
VLAI
Summary
In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01816800; Issue ID: MSV-6842.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 10:37 UTC
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Impacted products
Vendor Product Version
MediaTek, Inc. MediaTek chipset Affected: MT2716
Affected: MT2735
Affected: MT2737
Affected: MT6739
Affected: MT6761
Affected: MT6762
Affected: MT6763
Affected: MT6765
Affected: MT6767
Affected: MT6768
Affected: MT6769
Affected: MT6771
Affected: MT6779
Affected: MT6781
Affected: MT6783
Affected: MT6785
Affected: MT6789
Affected: MT6813
Affected: MT6833
Affected: MT6835
Affected: MT6853
Affected: MT6855
Affected: MT6858
Affected: MT6873
Affected: MT6875
Affected: MT6877
Affected: MT6878
Affected: MT6879
Affected: MT6880
Affected: MT6881
Affected: MT6883
Affected: MT6885
Affected: MT6886
Affected: MT6889
Affected: MT6890
Affected: MT6891
Affected: MT6893
Affected: MT6895
Affected: MT6896
Affected: MT6897
Affected: MT6899
Affected: MT6980
Affected: MT6982
Affected: MT6983
Affected: MT6985
Affected: MT6986
Affected: MT6986D
Affected: MT6988
Affected: MT6989
Affected: MT6990
Affected: MT6991
Affected: MT6993
Affected: MT8666
Affected: MT8667
Affected: MT8668
Affected: MT8673
Affected: MT8675
Affected: MT8676
Affected: MT8678
Affected: MT8755
Affected: MT8765
Affected: MT8766
Affected: MT8766R
Affected: MT8768
Affected: MT8771
Affected: MT8775
Affected: MT8781
Affected: MT8786
Affected: MT8788
Affected: MT8788E
Affected: MT8789
Affected: MT8791
Affected: MT8791T
Affected: MT8792
Affected: MT8793
Affected: MT8795T
Affected: MT8796
Affected: MT8797
Affected: MT8798
Affected: MT8863
Affected: MT8873
Affected: MT8883
Affected: MT8893
Create a notification for this product.
Show details on NVD website

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              "version": "MT6890"
            },
            {
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              "version": "MT6891"
            },
            {
              "status": "affected",
              "version": "MT6893"
            },
            {
              "status": "affected",
              "version": "MT6895"
            },
            {
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            },
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              "version": "MT6897"
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            {
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CVE-2026-20079 (GCVE-0-2026-20079)

Vulnerability from cvelistv5 – Published: 2026-03-04 17:17 – Updated: 2026-08-26 16:28
VLAI
Title
Cisco Secure Firewall Management Center Authentication Bypass Remote Code Execution Vulnerability
Summary
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.  This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device. 
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-05 04:55 UTC
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Impacted products
Vendor Product Version
Cisco Cisco Secure Firewall Management Center (FMC) Affected: 7.0.0
Affected: 7.0.0.1
Affected: 7.0.1
Affected: 7.1.0
Affected: 7.0.1.1
Affected: 7.1.0.1
Affected: 7.0.2
Affected: 7.2.0
Affected: 7.0.2.1
Affected: 7.0.3
Affected: 7.1.0.2
Affected: 7.2.0.1
Affected: 7.0.4
Affected: 7.2.1
Affected: 7.0.5
Affected: 7.3.0
Affected: 7.2.2
Affected: 7.3.1
Affected: 7.2.3
Affected: 7.1.0.3
Affected: 7.2.3.1
Affected: 7.2.4
Affected: 7.0.6
Affected: 7.2.4.1
Affected: 7.2.5
Affected: 7.3.1.1
Affected: 7.4.0
Affected: 7.0.6.1
Affected: 7.2.5.1
Affected: 7.4.1
Affected: 7.2.6
Affected: 7.4.1.1
Affected: 7.0.6.2
Affected: 7.2.7
Affected: 7.2.5.2
Affected: 7.3.1.2
Affected: 7.2.8
Affected: 7.6.0
Affected: 7.4.2
Affected: 7.2.8.1
Affected: 7.0.6.3
Affected: 7.4.2.1
Affected: 7.2.9
Affected: 7.0.7
Affected: 7.7.0
Affected: 7.4.2.2
Affected: 7.2.10
Affected: 7.6.1
Affected: 7.4.2.3
Affected: 7.0.8
Affected: 7.6.2
Affected: 7.7.10
Affected: 7.2.10.1
Affected: 7.0.8.1
Affected: 7.6.2.1
Affected: 7.2.10.2
Affected: 7.7.10.1
Affected: 7.4.2.4
Affected: 7.4.3
Affected: 7.7.11
Affected: 7.6.4
Affected: 10.0.0
Affected: 7.4.4
Affected: 7.4.5
Affected: 7.0.9
Affected: 7.2.11
Affected: 7.7.12
Affected: 7.6.5
Affected: 7.4.6
Affected: 10.0.1
Affected: 7.4.7
Create a notification for this product.
Show details on NVD website

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            },
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              "version": "7.7.10"
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              "version": "7.2.10.1"
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              "version": "7.0.8.1"
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              "status": "affected",
              "version": "7.2.10.2"
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              "status": "affected",
              "version": "7.7.10.1"
            },
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              "status": "affected",
              "version": "7.4.2.4"
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              "status": "affected",
              "version": "7.4.3"
            },
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              "version": "7.7.11"
            },
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              "status": "affected",
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              "version": "10.0.0"
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            },
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CVE-2026-18636 (GCVE-0-2026-18636)

Vulnerability from cvelistv5 – Published: 2026-08-11 14:40 – Updated: 2026-08-11 19:43
VLAI
Title
Velociraptor VFSGetBuffer API path deny list bypass
Summary
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SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 19:25 UTC
CWE
  • CWE-288 - Authentication bypass using an alternate path or channel
Impacted products
Vendor Product Version
Rapid7 Velociraptor Affected: 0 , < 0.77.2 (semver)
Create a notification for this product.
Credits
Show details on NVD website

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CVE-2026-18577 (GCVE-0-2026-18577)

Vulnerability from cvelistv5 – Published: 2026-08-02 22:06 – Updated: 2026-08-04 13:32
VLAI
Title
Incomplete patch leads to administrative account takeover
Summary
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 03:56 UTC
CWE
  • CWE-288 - Authentication bypass using an alternate path or channel
Impacted products
Vendor Product Version
N-able N-central Affected: 0 , ≤ 2026.3 (custom)
Unaffected: 2026.3.1.7 (custom)
Create a notification for this product.
Date Public
2026-08-02 21:44
Show details on NVD website

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CVE-2026-18574 (GCVE-0-2026-18574)

Vulnerability from cvelistv5 – Published: 2026-08-03 12:07 – Updated: 2026-08-05 03:56
VLAI
Title
Authentication Bypass in Check Point Security Management Server
Summary
An authentication bypass vulnerability in Check Point Security Management Server and Multi-Domain Security Management Server (MDS) could allow an unauthenticated remote attacker with network access to Management services to execute arbitrary commands on the Security Management Server. Successful exploitation could result in full compromise of the Security Management system. Check Point discovered this issue internally and has no indication of active exploitation.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 00:00 UTC
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
References
Impacted products
Vendor Product Version
checkpoint Security Management Server Affected: R82.10 with Jumbo Hotfix Accumulator Take 39 or below
Affected: R82 with Jumbo Hotfix Accumulator Take 121 or below
Affected: R81.20 with Jumbo Hotfix Accumulator Take 160 or below
Affected: R81.10
Affected: R81
Affected: R80.40
Affected: R80.30
Affected: R80.20
Affected: R80.10
Affected: R80
Create a notification for this product.
checkpoint Multi-Domain Security Management Server Affected: R82.10 with Jumbo Hotfix Accumulator Take 39 or below
Affected: R82 with Jumbo Hotfix Accumulator Take 121 or below
Affected: R81.20 with Jumbo Hotfix Accumulator Take 160 or below
Affected: R81.10
Affected: R81
Affected: R80.40
Affected: R80.30
Affected: R80.20
Affected: R80.10
Affected: R80
Create a notification for this product.
Show details on NVD website

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CVE-2026-18556 (GCVE-0-2026-18556)

Vulnerability from cvelistv5 – Published: 2026-08-01 19:59 – Updated: 2026-08-05 03:56
VLAI
Title
Unauthenticated administrative account takeover
Summary
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 00:00 UTC
CWE
  • CWE-288 - Authentication bypass using an alternate path or channel
Impacted products
Vendor Product Version
N-able N-central Affected: 0 , ≤ 2026.1 (custom)
Create a notification for this product.
Date Public
2026-08-01 19:56
Show details on NVD website

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CVE-2026-18047 (GCVE-0-2026-18047)

Vulnerability from cvelistv5 – Published: 2026-07-28 12:44 – Updated: 2026-07-28 13:26
VLAI
Title
Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash
Summary
A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 13:26 UTC
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-18047 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2507956 issue-trackingx_refsource_REDHAT
Date Public
2026-07-28 10:36
Show details on NVD website

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CVE-2026-16639 (GCVE-0-2026-16639)

Vulnerability from cvelistv5 – Published: 2026-08-25 22:22 – Updated: 2026-08-26 15:23
VLAI
Title
Internationalization Single Sign-On - Critical - Access bypass - SA-CONTRIB-2026-081
Summary
Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Internationalization Single Sign-On allows Authentication Bypass. This issue affects Internationalization Single Sign-On versions: from 0.0.0 to 1.8.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:22 UTC
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
References
Impacted products
Vendor Product Version
Drupal Internationalization Single Sign-On Affected: 0.0.0 , < 1.8.0 (semver)
Create a notification for this product.
Date Public
2026-07-22 17:53
Show details on NVD website

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CVE-2026-16198 (GCVE-0-2026-16198)

Vulnerability from cvelistv5 – Published: 2026-07-18 23:30 – Updated: 2026-07-21 14:32 X_Open Source
VLAI
Title
Sipeed PicoClaw First Run Setup access_control.go authentication bypass
Summary
A vulnerability was detected in Sipeed PicoClaw up to 0.2.9. The impacted element is an unknown function of the file web/backend/middleware/access_control.go of the component First Run Setup. Performing a manipulation of the argument allowed_cidrs results in authentication bypass using alternate channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is regarded as difficult. The exploit is now public and may be used. The patch is named 017601354be38cb027ff3ffb01aed79bd5d12610. Applying a patch is the recommended action to fix this issue.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 14:31 UTC
CWE
  • CWE-288 - Authentication Bypass Using Alternate Channel
  • CWE-287 - Improper Authentication
Impacted products
Vendor Product Version
Sipeed PicoClaw Affected: 0.2.0
Affected: 0.2.1
Affected: 0.2.2
Affected: 0.2.3
Affected: 0.2.4
Affected: 0.2.5
Affected: 0.2.6
Affected: 0.2.7
Affected: 0.2.8
Affected: 0.2.9
    cpe:2.3:a:sipeed:picoclaw:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-15014 (GCVE-0-2026-15014)

Vulnerability from cvelistv5 – Published: 2026-07-28 06:54 – Updated: 2026-07-28 13:56
VLAI
Title
SMS Alert <= 3.9.7 - Unauthenticated Authentication Bypass to Account Takeover via 'billing_phone' Parameter
Summary
The SMS Alert – SMS & OTP for WooCommerce, Order Notifications & Abandoned Cart Recovery plugin for WordPress is vulnerable to Authentication Bypass leading to Account Takeover in all versions up to, and including, 3.9.7 via the `billing_phone` parameter. This is due to the `processRegistration()` function using a phone-unbound `$_SESSION['sa_mobile_verified']` boolean flag as the sole gate before issuing an authentication cookie — the flag is set to `true` after any successful OTP validation without being bound to the specific phone number that was verified. This makes it possible for unauthenticated attackers to complete OTP verification for a phone number they control, then resubmit the registration request with a victim's `billing_phone` value to have `wp_set_auth_cookie()` called for the resolved victim account, enabling full authentication as any existing WordPress user whose registered phone number is known or guessable, including administrators.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 13:56 UTC
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Show details on NVD website

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Mitigation
Architecture and Design

Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.

CAPEC-127: Directory Indexing

An adversary crafts a request to a target that results in the target listing/indexing the content of a directory as output. One common method of triggering directory contents as output is to construct a request containing a path that terminates in a directory name rather than a file name since many applications are configured to provide a list of the directory's contents when such a request is received. An adversary can use this to explore the directory tree on a target as well as learn the names of files. This can often end up revealing test files, backup files, temporary files, hidden files, configuration files, user accounts, script contents, as well as naming conventions, all of which can be used by an attacker to mount additional attacks.

CAPEC-665: Exploitation of Thunderbolt Protection Flaws

An adversary leverages a firmware weakness within the Thunderbolt protocol, on a computing device to manipulate Thunderbolt controller firmware in order to exploit vulnerabilities in the implementation of authorization and verification schemes within Thunderbolt protection mechanisms. Upon gaining physical access to a target device, the adversary conducts high-level firmware manipulation of the victim Thunderbolt controller SPI (Serial Peripheral Interface) flash, through the use of a SPI Programing device and an external Thunderbolt device, typically as the target device is booting up. If successful, this allows the adversary to modify memory, subvert authentication mechanisms, spoof identities and content, and extract data and memory from the target device. Currently 7 major vulnerabilities exist within Thunderbolt protocol with 9 attack vectors as noted in the Execution Flow.