The Internet Authentication Service (IAS) in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol (PEAP) authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed request, aka "Internet Authentication Service Memory Corruption Vulnerability."

Improper authentication of Non-EAPOL/WAPI plaintext frames during four-way handshake can lead to arbitrary network packet injection in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music

In Android before 2018-01-05 on Qualcomm Snapdragon IoT, Snapdragon Mobile, Snapdragon Automobile APQ8096AU, MDM9206, MDM9650, MSM8996AU, SD 210/SD 212/SD 205, SD 425, SD 430, SD 625, SD 650/52, SD 820, SD 835, it is possible for the XBL loader to skip the authentication of device config.

Windows NT does not properly download a system policy if the domain user logs into the domain with a space at the end of the domain name.

The web interface on the SMC SMC8024L2 switch allows remote attackers to bypass authentication and obtain administrative access via a direct request to a .html file under (1) status/, (2) system/, (3) ports/, (4) trunks/, (5) vlans/, (6) qos/, (7) rstp/, (8) dot1x/, (9) security/, (10) igmps/, or (11) snmp/.

Sygate personal firewall 5.0 could allow remote attackers to bypass firewall filters via spoofed (1) source IP address of 127.0.0.1 or (2) network address of 127.0.0.0.

The "Java Update" feature for Java Runtime Environment (JRE) for Sun JDK and JRE 6 Update 10 and earlier; JDK and JRE 5.0 Update 16 and earlier; and SDK and JRE 1.4.2_18 and earlier does not verify the signature of the JRE that is downloaded, which allows remote attackers to execute arbitrary code via DNS man-in-the-middle attacks.

An authentication bypass vulnerability on UTStar WA3002G4 ADSL Broadband Modem WA3002G4-0021.01 devices allows attackers to directly access administrative settings and obtain cleartext credentials from HTML source, as demonstrated by info.cgi, upload.cgi, backupsettings.cgi, pppoe.cgi, resetrouter.cgi, and password.cgi.

The function in charge to check whether the user is already logged in init.php in Interspire Email Marketer (IEM) prior to 6.1.6 allows remote attackers to bypass authentication and obtain administrative access by using the IEM_CookieLogin cookie with a specially crafted value.

D-Link DNS-320L firmware before 1.04b12, DNS-327L before 1.03b04 Build0119, DNR-326 1.40b03, DNS-320B 1.02b01, DNS-345 1.03b06, DNS-325 1.05b03, and DNS-322L 2.00b07 allow remote attackers to bypass authentication and log in with administrator permissions by passing the cgi_set_wto command in the cmd parameter, and setting the spawned session's cookie to username=admin.

GE Infinia/Infinia with Hawkeye 4 medical imaging systems all current versions are affected these devices use default or hard-coded credentials. Successful exploitation of this vulnerability may allow a remote attacker to bypass authentication and gain access to the affected devices.

An authentication vulnerability in HPE BSM Platform Application Performance Management System Health product versions 9.26, 9.30 and 9.40, allows remote users to bypass authentication.

It was discovered that the api/storage web interface in Unitrends Backup (UB) before 10.0.0 has an issue in which one of its input parameters was not validated. A remote attacker could use this flaw to bypass authentication and execute arbitrary commands with root privilege on the target system.

It was discovered that the bpserverd proprietary protocol in Unitrends Backup (UB) before 10.0.0, as invoked through xinetd, has an issue in which its authentication can be bypassed. A remote attacker could use this issue to execute arbitrary commands with root privilege on the target system.

A vulnerability in the REST API of the web-based user interface (web UI) of Cisco IOS XE 3.1 through 16.5 could allow an unauthenticated, remote attacker to bypass authentication to the REST API of the web UI of the affected software. The vulnerability is due to insufficient input validation for the REST API of the affected software. An attacker could exploit this vulnerability by sending a malicious API request to an affected device. A successful exploit could allow the attacker to bypass authentication and gain access to the web UI of the affected software. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, if the HTTP Server feature is enabled for the device. The newly redesigned, web-based administration UI was introduced in the Denali 16.2 Release of Cisco IOS XE Software. This vulnerability does not affect the web-based administration UI in earlier releases of Cisco IOS XE Software. Cisco Bug IDs: CSCuz46036.

A specific device configuration can result in a commit failure condition. When this occurs, a user is logged in without being prompted for a password while trying to login through console, ssh, ftp, telnet or su, etc., This issue relies upon a device configuration precondition to occur. Typically, device configurations are the result of a trusted administrative change to the system's running configuration. The following error messages may be seen when this failure occurs: mgd: error: commit failed: (statements constraint check failed) Warning: Commit failed, activating partial configuration. Warning: Edit the router configuration to fix these errors. If the administrative changes are not made that result in such a failure, then this issue is not seen. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS 12.3 prior to 12.3R10, 12.3R11; 12.3X48 prior to 12.3X48-D20; 13.2 prior to 13.2R8; 13.3 prior to 13.3R7; 14.1 prior to 14.1R4-S12, 14.1R5, 14.1R6; 14.1X53 prior to 14.1X53-D30; 14.2 prior to 14.2R4; 15.1 prior to 15.1F2, 15.1F3, 15.1R2.

An authentication bypass vulnerability in Juniper Networks Junos Space Network Management Platform may allow a remote unauthenticated network based attacker to login as any privileged user. This issue only affects Junos Space Network Management Platform 17.1R1 without Patch v1 and 16.1 releases prior to 16.1R3. This issue was found by an external security researcher.

Improper authentication issue in PTW-WMS1 firmware version 2.000.012 allows remote attackers to log in to the device with root privileges and conduct arbitrary operations via unspecified vectors.

SYN Flood or FIN Flood attack in ECos 1 and other versions embedded devices results in web Authentication Bypass. "eCos Embedded Web Servers used by Multiple Routers and Home devices, while sending SYN Flood or FIN Flood packets fails to validate and handle the packets and does not ask for any sign of authentication resulting in Authentication Bypass. An attacker can take complete advantage of this bug and take over the device remotely or locally. The bug has been successfully tested and reproduced in some versions of SOHO Routers manufactured by TOTOLINK, GREATEK and others."

An issue was discovered in Moxa NPort 5110 versions prior to 2.6, NPort 5130/5150 Series versions prior to 3.6, NPort 5200 Series versions prior to 2.8, NPort 5400 Series versions prior to 3.11, NPort 5600 Series versions prior to 3.7, NPort 5100A Series & NPort P5150A versions prior to 1.3, NPort 5200A Series versions prior to 1.3, NPort 5150AI-M12 Series versions prior to 1.2, NPort 5250AI-M12 Series versions prior to 1.2, NPort 5450AI-M12 Series versions prior to 1.2, NPort 5600-8-DT Series versions prior to 2.4, NPort 5600-8-DTL Series versions prior to 2.4, NPort 6x50 Series versions prior to 1.13.11, NPort IA5450A versions prior to v1.4. Firmware can be updated over the network without authentication, which may allow remote code execution.

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow an unauthenticated, remote attacker to bypass user authentication and gain access as an administrative user. The vulnerability is due to insufficient request header validation during the authentication process. An attacker could exploit this vulnerability by sending a series of malicious requests to an affected device. An exploit could allow the attacker to gain full administrative access to the affected device.

SKYSEA Client View Ver.11.221.03 and earlier allows remote code execution via a flaw in processing authentication on the TCP connection with the management console program.

CEServer.exe in the CEServer component in the Remote Agent module in InduSoft Web Studio 6.1 and 7.0 does not require authentication, which allows remote attackers to execute arbitrary code via vectors related to creation of a file, loading a DLL, and process control.

Siemens SpeedStream 5200 with NetPort Software 1.1 allows remote attackers to bypass authentication via an invalid Host header, possibly involving a trailing dot in the hostname.

The web application portal of the Cobham EXPLORER 710, firmware version 1.07, allows unauthenticated access to port 5454. This could allow an unauthenticated, remote attacker to connect to this port via Telnet and execute 86 Attention (AT) commands, including some that provide unauthenticated, shell-like access to the device.

A vulnerability in the REST API interface of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to bypass authentication on an affected system. The vulnerability is due to insufficient validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to execute arbitrary actions through the REST API with administrative privileges on the affected system. The REST API is enabled by default and cannot be disabled.

A vulnerability has been identified in Firmware variant PROFINET IO for EN100 Ethernet module : All versions < V1.04.01; Firmware variant Modbus TCP for EN100 Ethernet module : All versions < V1.11.00; Firmware variant DNP3 TCP for EN100 Ethernet module : All versions < V1.03; Firmware variant IEC 104 for EN100 Ethernet module : All versions < V1.21; EN100 Ethernet module included in SIPROTEC Merging Unit 6MU80 : All versions < 1.02.02. Attackers with network access to the device's web interface (port 80/tcp) could possibly circumvent authentication and perform certain administrative operations.

servermgrd (Server Manager) in Apple Mac OS X 10.5.6 does not properly validate authentication credentials, which allows remote attackers to modify the system configuration.

Podcast Producer in Apple Mac OS X 10.5 before 10.5.6 allows remote attackers to bypass authentication and gain administrative access via unspecified vectors.

The Java Servlet framework on Cisco TelePresence Multipoint Switch (CTMS) devices with software 1.0.x, 1.1.x, 1.5.x, and 1.6.x does not require administrative authentication for unspecified actions, which allows remote attackers to execute arbitrary code via a crafted request, aka Bug ID CSCtf01253.

A vulnerability in the interdevice communications interface of the Cisco IP Interoperability and Collaboration System (IPICS) Universal Media Services (UMS) could allow an unauthenticated, remote attacker to modify configuration parameters of the UMS and cause the system to become unavailable. Affected Products: This vulnerability affects Cisco IPICS releases 4.8(1) to 4.10(1). More Information: CSCva46644. Known Affected Releases: 4.10(1) 4.8(1) 4.8(2) 4.9(1) 4.9(2).

The default configuration of Pandora FMS 3.1 and earlier specifies an empty string for the loginhash_pwd field, which allows remote attackers to bypass authentication by sending a request to index.php with "admin" in the loginhash_user parameter, in conjunction with the md5 hash of "admin" in the loginhash_data parameter.

An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper authentication could provide an undocumented BusyBox Linux shell accessible over the TELNET service without any authentication.

Siemens SINAMICS S/G controllers with firmware before 4.6.11 do not require authentication for FTP and TELNET sessions, which allows remote attackers to bypass intended access restrictions via TCP traffic to port (1) 21 or (2) 23.

The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.

Xpress Server in SAP POS does not require authentication for read/write/delete file access. This is SAP Security Note 2520064.

MicroNews allows remote attackers to bypass authentication and gain administrative privileges via a direct request to admin.php.

The User Registration & User Profile – Profile Builder WordPress plugin before 3.4.9 has a bug allowing any user to reset the password of the admin of the blog, and gain unauthorised access, due to a bypass in the way the reset key is checked. Furthermore, the admin will not be notified of such change by email for example.

A business logic issue in the MStore API WordPress plugin, versions before 3.2.0, had an authentication bypass with Sign In With Apple allowing unauthenticated users to recover an authentication cookie with only an email address.

Login with hash: The login routine allows the client to log in to the system not by using the password, but by using the hash of the password. Combined with CVE-2021-23858, this allows an attacker to subsequently login to the system.

HP Support Assistant before 8.1.52.1 allows remote attackers to bypass authentication via unspecified vectors.

acFTP 1.4 does not properly handle when an invalid password is provided by the user during authentication, which allows remote attackers to hide or misrepresent certain activity from log files and possibly gain privileges.

A vulnerability, which was classified as critical, was found in LB-LINK BL-AC1900, BL-AC2100_AZ3, BL-AC3600, BL-AX1800, BL-AX5400P and BL-WR9000 up to 20250702. Affected is the function reboot/restore of the file /cgi-bin/lighttpd.cgi of the component Web Interface. The manipulation leads to improper authentication. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

On Grandstream GXV3611IR_HD before 1.0.3.23 devices, the root account lacks a password.

J-Web in Juniper Junos OS before 12.1X46-D45, 12.1X46-D50, 12.1X47 before 12.1X47-D35, 12.3 before 12.3R12, 12.3X48 before 12.3X48-D25, 13.3 before 13.3R10, 13.3R9 before 13.3R9-S1, 14.1 before 14.1R7, 14.1X53 before 14.1X53-D35, 14.2 before 14.2R6, 15.1 before 15.1A2 or 15.1F4, 15.1X49 before 15.1X49-D30, and 15.1R before 15.1R3 might allow remote attackers to obtain sensitive information and consequently gain administrative privileges via unspecified vectors.

Cisco NX-OS 6.0(2)U6(1) through 6.0(2)U6(5) on Nexus 3000 devices and 6.0(2)A6(1) through 6.0(2)A6(5) and 6.0(2)A7(1) on Nexus 3500 devices has hardcoded credentials, which allows remote attackers to obtain root privileges via a (1) TELNET or (2) SSH session, aka Bug ID CSCuy25800.

userHandler.cgi in RaidSonic ICY BOX NAS firmware 2.3.2.IB.2.RS.1 allows remote attackers to bypass authentication and gain administrator privileges by setting the login parameter to admin. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

console-io is a module that allows users to implement a web console in their application. A malicious user could bypass the authentication and execute any command that the user who is running the console-io application 2.2.13 and earlier is able to run. This means that if console-io was running from root, the attacker would have full access to the system. This vulnerability exists because the console-io application does not configure socket.io to require authentication, which allows a malicious user to connect via a websocket to send commands and receive the response.