Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

CVEs (4,461)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2004-2724 1Lionmax Software 1Chat Anywhere Apr 16, 2026 Dec 31, 2004 N/A· v4 N/A· v3 7.1 HIGH· v2 LionMax Software Chat Anywhere 2.72a allows remote attackers to cause a denial of service (server crash and client CPU consumption) via a username beginning with percent (%) followed by a null character.
CVE-2004-2715 1Php Heaven 1Phpmychat Apr 16, 2026 Dec 31, 2004 N/A· v4 N/A· v3 7.5 HIGH· v2 edituser.php3 in PHPMyChat 0.14.5 allow remote attackers to bypass authentication and gain administrative privileges by setting the do_not_login parameter to false.
CVE-2004-2182 1Macromedia 1Jrun Apr 16, 2026 Dec 31, 2004 N/A· v4 N/A· v3 7.5 HIGH· v2 Session fixation vulnerability in Macromedia JRun 4.0 allows remote attackers to hijack user sessions by pre-setting the user session ID information used by the session server.
CVE-2004-1760 2Cisco Ibm 17Call Manager Conference ConnectionDirector Agent+14 more Apr 16, 2026 Jan 21, 2004 N/A· v4 N/A· v3 10.0 HIGH· v2 The default installation of Cisco voice products, when running the IBM Director Agent on IBM servers before OS 2000.2.6, does not require authentication, which allows remote attackers to gain administrator privileges by...Show more The default installation of Cisco voice products, when running the IBM Director Agent on IBM servers before OS 2000.2.6, does not require authentication, which allows remote attackers to gain administrator privileges by connecting to TCP port 14247.Show less
CVE-2003-1489 1Truegalerie 1Truegalerie Apr 16, 2026 Dec 31, 2003 N/A· v4 N/A· v3 5.0 MEDIUM· v2 upload.php in Truegalerie 1.0 allows remote attackers to read arbitrary files by specifying the target filename in the file cookie in form.php, then downloading the file from the image gallery.
CVE-2003-1475 1Netbus 1Netbus Apr 16, 2026 Dec 31, 2003 N/A· v4 N/A· v3 6.8 MEDIUM· v2 Netbus 1.5 through 1.7 allows more than one client to be connected at the same time, but only prompts the first connection for authentication, which allows remote attackers to gain access.
CVE-2003-1442 1Ericsson 1Hm220dp Adsl Modem Apr 16, 2026 Dec 31, 2003 N/A· v4 N/A· v3 7.5 HIGH· v2 The web administration page for the Ericsson HM220dp ADSL modem does not require authentication, which could allow remote attackers to gain access from the LAN side.
CVE-2003-1434 1Pete Werner 1Login Ldap Apr 16, 2026 Dec 31, 2003 N/A· v4 N/A· v3 6.8 MEDIUM· v2 login_ldap 3.1 and 3.2 allows remote attackers to initiate unauthenticated bind requests if (1) bind_anon_dn is on, which allows a bind with no password provided, (2) bind_anon_cred is on, which allows a bind with no DN,...Show more login_ldap 3.1 and 3.2 allows remote attackers to initiate unauthenticated bind requests if (1) bind_anon_dn is on, which allows a bind with no password provided, (2) bind_anon_cred is on, which allows a bind with no DN, or (3) bind_anon is on, which allows a bind with no DN or password.Show less
CVE-2003-1433 1Epic Games 1Unreal Engine Apr 16, 2026 Dec 31, 2003 N/A· v4 N/A· v3 4.3 MEDIUM· v2 Epic Games Unreal Engine 226f through 436 does not validate the challenge key, which allows remote attackers to exhaust the player limit by joining the game multiple times.
CVE-2003-1343 1Trend Micro 1Scanmail Apr 16, 2026 Dec 31, 2003 N/A· v4 N/A· v3 7.5 HIGH· v2 Trend Micro ScanMail for Exchange (SMEX) before 3.81 and before 6.1 might install a back door account in smg_Smxcfg30.exe, which allows remote attackers to gain access to the web management interface via the vcc paramete...Show more Trend Micro ScanMail for Exchange (SMEX) before 3.81 and before 6.1 might install a back door account in smg_Smxcfg30.exe, which allows remote attackers to gain access to the web management interface via the vcc parameter, possibly "3560121183d3".Show less
CVE-2003-0216 1Cisco 1Catos Apr 16, 2026 May 12, 2003 N/A· v4 N/A· v3 9.3 HIGH· v2 Unknown vulnerability in Cisco Catalyst 7.5(1) allows local users to bypass authentication and gain access to the enable mode without a password.
CVE-2002-2417 1Acftp 1Acftp Apr 16, 2026 Dec 31, 2002 N/A· v4 N/A· v3 10.0 HIGH· v2 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 privilege...Show more 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.Show less
CVE-2002-2397 1Symantec 1Sygate Personal Firewall Apr 16, 2026 Dec 31, 2002 N/A· v4 N/A· v3 10.0 HIGH· v2 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.
CVE-2002-2279 1Aldap 1Aldap Apr 16, 2026 Dec 31, 2002 N/A· v4 N/A· v3 10.0 HIGH· v2 Unspecified vulnerability in the bind function in config.inc of aldap 0.09 allows remote attackers to authenticate with Manager permissions.
CVE-2002-0507 2Microsoft Rsa 2Exchange Server Securid Apr 16, 2026 Aug 12, 2002 N/A· v4 N/A· v3 2.1 LOW· v2 An interaction between Microsoft Outlook Web Access (OWA) with RSA SecurID allows local users to bypass the SecurID authentication for a previous user via several submissions of an OWA Authentication request with the pro...Show more An interaction between Microsoft Outlook Web Access (OWA) with RSA SecurID allows local users to bypass the SecurID authentication for a previous user via several submissions of an OWA Authentication request with the proper OWA password for the previous user, which is eventually accepted by OWA.Show less
CVE-2002-0563 1Oracle 4Application Server Application Server Web CacheOracle8i+1 more Apr 16, 2026 Jul 3, 2002 N/A· v4 N/A· v3 5.0 MEDIUM· v2 The default configuration of Oracle 9i Application Server 1.0.2.x allows remote anonymous users to access sensitive services without authentication, including Dynamic Monitoring Services (1) dms0, (2) dms/DMSDump, (3) se...Show more The default configuration of Oracle 9i Application Server 1.0.2.x allows remote anonymous users to access sensitive services without authentication, including Dynamic Monitoring Services (1) dms0, (2) dms/DMSDump, (3) servlet/DMSDump, (4) servlet/Spy, (5) soap/servlet/Spy, and (6) dms/AggreSpy; and Oracle Java Process Manager (7) oprocmgr-status and (8) oprocmgr-service, which can be used to control Java processes.Show less
CVE-2001-1585 1Openbsd 1Openssh Apr 16, 2026 Dec 31, 2001 N/A· v4 N/A· v3 6.8 MEDIUM· v2 SSH protocol 2 (aka SSH-2) public key authentication in the development snapshot of OpenSSH 2.3.1, available from 2001-01-18 through 2001-02-08, does not perform a challenge-response step to ensure that the client has th...Show more SSH protocol 2 (aka SSH-2) public key authentication in the development snapshot of OpenSSH 2.3.1, available from 2001-01-18 through 2001-02-08, does not perform a challenge-response step to ensure that the client has the proper private key, which allows remote attackers to bypass authentication as other users by supplying a public key from that user's authorized_keys file.Show less
CVE-2001-0537 1Cisco 1Ios Apr 16, 2026 Jul 21, 2001 N/A· v4 N/A· v3 9.3 HIGH· v2 HTTP server for Cisco IOS 11.3 to 12.2 allows attackers to bypass authentication and execute arbitrary commands, when local authorization is being used, by specifying a high access level in the URL.
CVE-1999-0987 1Microsoft 1Windows Nt Apr 16, 2026 Nov 18, 1999 N/A· v4 N/A· v3 10.0 HIGH· v2 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.
CVE-1999-0680 1Microsoft 1Terminal Server Apr 16, 2026 Aug 9, 1999 N/A· v4 N/A· v3 5.0 MEDIUM· v2 Windows NT Terminal Server performs extra work when a client opens a new connection but before it is authenticated, allowing for a denial of service.

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