Common Weakness Enumeration

CWE-290

Allowed

Authentication Bypass by Spoofing

Abstraction: Base · Status: Incomplete

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

925 vulnerabilities reference this CWE, most recent first.

CVE-2026-7656 (GCVE-0-2026-7656)

Vulnerability from cvelistv5 – Published: 2026-06-29 22:09 – Updated: 2026-07-14 18:38
VLAI
Title
Broken IPv6 Neighbor Discovery input validation allows spoofed RA/NS/NA acceptance in Zephyr net stack
Summary
The IPv6 Neighbor Discovery handlers in subsys/net/ip/ipv6_nbr.c (handle_ra_input, handle_ns_input, handle_na_input) used an incorrect boolean expression that combined the RFC 4861 validity checks with the ICMPv6 code check using the wrong operator precedence: the form was '((length/hop/source/target checks) && (icmp_hdr->code != 0))'. Because every legitimate ND message carries ICMPv6 code 0, an attacker setting code == 0 (the normal value) caused the entire predicate to evaluate false, so the packet was never dropped and all of the other checks were silently skipped. The bypassed checks include the mandatory Hop Limit == 255 verification (which proves an ND packet originated on-link and was not forwarded) and, for Router Advertisements, the requirement that the source be a link-local address, as well as multicast-target sanity checks. As a result, an adjacent on-link attacker — and, because the Hop-Limit-255 guard is bypassed, potentially a remote/off-link attacker whose packets would otherwise be rejected — can have forged Router Advertisement, Neighbor Solicitation, and Neighbor Advertisement messages accepted. A forged RA lets the attacker reconfigure the victim's default router, on-link prefixes (SLAAC), MTU, reachable/retransmit timers, and (with CONFIG_NET_IPV6_RA_RDNSS) DNS servers, while forged NS/NA enable neighbor-cache poisoning, enabling man-in-the-middle, traffic redirection, and denial of service. The flaw is an input-validation/authentication weakness rather than a memory-safety issue: the underlying packet-parsing primitives (net_pkt_get_data, net_pkt_read, net_pkt_skip) are independently bounds-safe and the validated 'length' is the true buffer length, so skipping the length check causes no out-of-bounds access. The defect has existed since the logic was introduced in 2018 and shipped in all releases through v4.4.0; it is fixed by splitting the condition so any failing check drops the packet.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
zephyrproject zephyr Affected: 1.14.0 , < 4.5.0 (semver)
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Show details on NVD website

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CVE-2026-7507 (GCVE-0-2026-7507)

Vulnerability from cvelistv5 – Published: 2026-05-19 11:01 – Updated: 2026-07-15 00:39
VLAI
Title
Org.keycloak/keycloak-services: session fixation in oidc login flow that can lead to account takeover
Summary
A session fixation vulnerability was found in Keycloak's login-actions endpoints. An unauthenticated attacker could exploit this flaw by pre-creating an authentication session and tricking a victim into visiting a maliciously crafted link. By leveraging the /login-actions/restart endpoint—which processes session handles without adequate CSRF protection or cookie ownership validation—an attacker can reset the authentication flow state. This causes Single Sign-On (SSO) to authenticate the victim transparently upon clicking the link, allowing the attacker to hijack the required-action form without needing the victim's credentials. A successful exploit could lead to complete account takeover, including highly privileged administrative accounts.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2.16-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
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Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2-21 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
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Red Hat Red Hat build of Keycloak 26.2.16     cpe:/a:redhat:build_keycloak:26.2::el9
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Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.12-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-17 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.4.12     cpe:/a:redhat:build_keycloak:26.4::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.2.16 Unaffected: rhel9-operator , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.4.12 Unaffected: rhel9-operator , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
Create a notification for this product.
Date Public
2026-05-19 10:51
Credits
Red Hat would like to thank Hacking Team (Calif.io) for reporting this issue.
Show details on NVD website

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CVE-2026-7422 (GCVE-0-2026-7422)

Vulnerability from cvelistv5 – Published: 2026-04-29 18:35 – Updated: 2026-04-29 19:07
VLAI
Title
MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing
Summary
Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the device's own registered endpoints, because the loopback detection mechanism skips all input validation for packets whose source MAC matches a local endpoint. To mitigate this issue, users should upgrade to the fixed version when available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
Impacted products
Vendor Product Version
AWS FreeRTOS-Plus-TCP Affected: 4.0.0 , < 4.2.6 (semver)
Affected: 4.3.0 , < 4.4.1 (semver)
Unaffected: 4.2.6
Unaffected: 4.4.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-6213 (GCVE-0-2026-6213)

Vulnerability from cvelistv5 – Published: 2026-05-08 09:04 – Updated: 2026-05-11 07:48
VLAI
Title
Remote Spark SparkView RCE
Summary
A vulnerability in Remote Spark SparkView before build 1122 allows an attacker to bypasses the local connection check and achieve arbitrary code execution as root on the server side. Depending on implementation the vulnerability can be exploited by an unauthenticated attacker.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-807 - Reliance on untrusted inputs in a security decision
  • CWE-290 - Authentication bypass by spoofing
Assigner
References
Impacted products
Credits
Manuel Feifel of InfoGuard Labs
Show details on NVD website

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CVE-2026-6090 (GCVE-0-2026-6090)

Vulnerability from cvelistv5 – Published: 2026-06-10 14:09 – Updated: 2026-06-10 16:06
VLAI
Summary
A potential authentication bypass was reported in Lenovo Smart Connect for Windows that could allow a local authenticated user to execute arbitrary code with elevated privileges.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
Impacted products
Vendor Product Version
Lenovo Smart Connect Affected: 0 , < 09.0.2.003.000 (custom)
Create a notification for this product.
Credits
Lenovo thanks Lex Bitcow for reporting this vulnerability.
Show details on NVD website

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CVE-2026-5792 (GCVE-0-2026-5792)

Vulnerability from cvelistv5 – Published: 2026-06-12 14:26 – Updated: 2026-06-15 11:22
VLAI
Title
Authentication Bypass in Hedef Media's Related Marketing Cloud (RMC)
Summary
Authentication bypass by spoofing vulnerability in Hedef Media Promotion Interactive Media Marketing Inc. Related Marketing Cloud (RMC) allows Brute Force. This issue affects Related Marketing Cloud (RMC): through 12052026.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication bypass by spoofing
Assigner
References
Impacted products
Date Public
2026-06-12 14:20
Credits
Ferit ÖZNER
Show details on NVD website

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CVE-2026-3902 (GCVE-0-2026-3902)

Vulnerability from cvelistv5 – Published: 2026-04-07 14:22 – Updated: 2026-04-07 16:14
VLAI
Title
ASGI header spoofing via underscore/hyphen conflation
Summary
An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants (with hyphens or with underscores) to a single version with underscores. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Tarek Nakkouch for reporting this issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
DSF
Impacted products
Vendor Product Version
djangoproject Django Affected: 6.0 , < 6.0.4 (semver)
Unaffected: 6.0.4 (semver)
Affected: 5.2 , < 5.2.13 (semver)
Unaffected: 5.2.13 (semver)
Affected: 4.2 , < 4.2.30 (semver)
Unaffected: 4.2.30 (semver)
Create a notification for this product.
Date Public
2026-04-07 09:00
Credits
Tarek Nakkouch Jacob Walls Jacob Walls
Show details on NVD website

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CVE-2026-0834 (GCVE-0-2026-0834)

Vulnerability from cvelistv5 – Published: 2026-01-21 17:14 – Updated: 2026-04-28 17:46
VLAI
Title
Logic Vulnerability on TP-Link Archer C20, Archer AX53 and TL-WR841N v13
Summary
Logic vulnerability in TP-Link Archer C20 v5, 6.0, Archer AX53 v1.0 and TL-WR841N v13 (TDDP module) allows unauthenticated adjacent attackers to execute administrative commands including factory reset and device reboot without credentials. Attackers on the adjacent network can remotely trigger factory resets and reboots without credentials, causing configuration loss and interruption of device availability. This issue affects Archer C20 v6.0 < V6_251031, Archer C20 v5 <EU_V5_260317 or < US_V5_260419 Archer AX53 v1.0 < V1_251215 TL-WR841N v13 < 0.9.1 Build 20231120 Rel.62366
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
Impacted products
Vendor Product Version
TP-Link Systems Inc. Archer C20 v6.0, Archer AX53 v1.0 Affected: 0 , < V6_251031 (custom)
Affected: 0 , < V1_251215 (custom)
Create a notification for this product.
TP-Link Systems Inc. Archer C20 V5 Affected: 0 , < US_V5_260419 (custom)
Affected: 0 , < EU_V5_260317 (custom)
Create a notification for this product.
TP Link Systems Inc. TL-WR841N v13 Affected: 0 , < 0.9.1 Build 20231120 Rel.62366 (custom)
Create a notification for this product.
Credits
Matt Graham (mattg.systems) Ben Grinberg, Adiel Sol, Daniel Lubel, Erez Cohen, Nir Somech, Arad Inbar, Dream Group
Show details on NVD website

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CVE-2025-69401 (GCVE-0-2025-69401)

Vulnerability from cvelistv5 – Published: 2026-02-20 15:46 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress WooODT Lite plugin <= 2.5.2 - Payment Bypass Vulnerability vulnerability
Summary
Authentication Bypass by Spoofing vulnerability in mdalabar WooODT Lite byconsole-woo-order-delivery-time allows Identity Spoofing.This issue affects WooODT Lite: from n/a through <= 2.5.2.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
Vendor Product Version
mdalabar WooODT Lite Affected: 0 , ≤ 2.5.2 (custom)
Create a notification for this product.
Date Public
2026-04-22 14:19
Credits
benzdeus | Patchstack Bug Bounty Program
Show details on NVD website

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CVE-2025-69258 (GCVE-0-2025-69258)

Vulnerability from cvelistv5 – Published: 2026-01-08 12:50 – Updated: 2026-02-26 15:04
VLAI
Summary
A LoadLibraryEX vulnerability in Trend Micro Apex Central could allow an unauthenticated remote attacker to load an attacker-controlled DLL into a key executable, leading to execution of attacker-supplied code under the context of SYSTEM on affected installations.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
  • CWE-346 - Origin Validation Error
  • CWE-120 - Buffer Copy without Checking Size of Input
Assigner
Impacted products
Vendor Product Version
Trend Micro, Inc. Trend Micro Apex Central Affected: 2019 (14.0) , < Build 7190 (semver)
    cpe:2.3:a:trendmicro:apexcentral:2019:7190:-:*:-:windows:*:*
Create a notification for this product.
Show details on NVD website

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No mitigation information available for this CWE.

CAPEC-21: Exploitation of Trusted Identifiers

An adversary guesses, obtains, or "rides" a trusted identifier (e.g. session ID, resource ID, cookie, etc.) to perform authorized actions under the guise of an authenticated user or service.

CAPEC-22: Exploiting Trust in Client

An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.

CAPEC-459: Creating a Rogue Certification Authority Certificate

An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.

CAPEC-461: Web Services API Signature Forgery Leveraging Hash Function Extension Weakness

An adversary utilizes a hash function extension/padding weakness, to modify the parameters passed to the web service requesting authentication by generating their own call in order to generate a legitimate signature hash (as described in the notes), without knowledge of the secret token sometimes provided by the web service.

CAPEC-473: Signature Spoof

An attacker generates a message or datablock that causes the recipient to believe that the message or datablock was generated and cryptographically signed by an authoritative or reputable source, misleading a victim or victim operating system into performing malicious actions.

CAPEC-476: Signature Spoofing by Misrepresentation

An attacker exploits a weakness in the parsing or display code of the recipient software to generate a data blob containing a supposedly valid signature, but the signer's identity is falsely represented, which can lead to the attacker manipulating the recipient software or its victim user to perform compromising actions.

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.

CAPEC-60: Reusing Session IDs (aka Session Replay)

This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.

CAPEC-667: Bluetooth Impersonation AttackS (BIAS)

An adversary disguises the MAC address of their Bluetooth enabled device to one for which there exists an active and trusted connection and authenticates successfully. The adversary can then perform malicious actions on the target Bluetooth device depending on the target’s capabilities.

CAPEC-94: Adversary in the Middle (AiTM)

An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.