The Authentication Proxy feature in Cisco IOS does not properly handle invalid AAA return codes from RADIUS and TACACS+ servers, which allows remote attackers to bypass authentication in opportunistic circumstances via a connection attempt that triggers an invalid code, as demonstrated by a connection attempt with a blank password, aka Bug IDs CSCuo09400 and CSCun16016.

The SOAP interface in Cisco Hosted Collaboration Solution (HCS) allows remote attackers to obtain access to system-management tools via crafted Challenge SOAP calls, aka Bug ID CSCuc38114.

The API in the Guest Server in Cisco Jabber, when HTML5 is used, allows remote attackers to obtain sensitive information by sniffing the network during an HTTP (1) GET or (2) POST response, aka Bug ID CSCus19801.

The API in the Guest Server in Cisco Jabber, when the HTML5 CORS feature is used, allows remote attackers to obtain sensitive information by sniffing the network during an HTTP (1) GET or (2) POST request, aka Bug ID CSCus19789.

A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability is due to improper storage of sensitive information within the web UI of Session Initiation Protocol (SIP)-based phone loads. An attacker could exploit this vulnerability by browsing to the IP address of a device that has Web Access enabled. A successful exploit could allow the attacker to access sensitive information, including incoming and outgoing call records. Note: Web Access is disabled by default.

A vulnerability in the password change feature of Cisco Firepower Management Center (FMC) software could allow an unauthenticated, remote attacker to determine valid user names on an affected device. This vulnerability is due to improper authentication of password update responses. An attacker could exploit this vulnerability by forcing a password reset on an affected device. A successful exploit could allow the attacker to determine valid user names in the unauthenticated response to a forced password reset.

A vulnerability in the web-based management interface of Cisco Finesse could allow an unauthenticated, remote attacker to conduct an SSRF attack on an affected system. This vulnerability is due to insufficient validation of user-supplied input for specific HTTP requests that are sent to an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. A successful exploit could allow the attacker to obtain limited sensitive information for services that are associated to the affected device.

Cisco Linksys E4200 1.0.05 Build 7 devices contain a Clickjacking Vulnerability which allows remote attackers to obtain sensitive information.

A vulnerability in the Multiprotocol Label Switching (MPLS) packet handling function of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to gain access to information stored in MPLS buffer memory. This vulnerability is due to insufficient handling of malformed MPLS packets that are processed by a device that is running Cisco SD-WAN Software. An attacker could exploit this vulnerability by sending a crafted MPLS packet to an affected device that is running Cisco SD-WAN Software or Cisco SD-WAN vManage Software. A successful exploit could allow the attacker to gain unauthorized access to sensitive information.

A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to view sensitive information from the meeting room lobby. This vulnerability is due to insufficient protection of sensitive participant information. An attacker could exploit this vulnerability by browsing the Webex roster. A successful exploit could allow the attacker to gather information about other Webex participants, such as email address and IP address, while waiting in the lobby.

A vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) could allow an unauthenticated, remote attacker to obtain confidential information from an affected device. The vulnerability is due to missing authentication on a specific part of the web-based management interface. An attacker could exploit this vulnerability by sending a crafted request to the interface. A successful exploit could allow the attacker to read confidential information from an affected device.

A vulnerability in the Web Access feature of Cisco IP Phones Series 7800 and Series 8800 could allow an unauthenticated, remote attacker to view sensitive information on an affected device. The vulnerability is due to improper access controls on the web-based management interface of an affected device. An attacker could exploit this vulnerability by sending malicious requests to the device, which could allow the attacker to bypass access restrictions. A successful attack could allow the attacker to view sensitive information, including device call logs that contain names, usernames, and phone numbers of users of the device.

A vulnerability in the session identification management functionality of the web-based GUI of Cisco Integrated Management Controller (IMC) 3.0(1c) could allow an unauthenticated, remote attacker to hijack a valid user session on an affected system. The vulnerability exists because the affected software does not assign a new session identifier to a user session when a user authenticates to the web-based GUI. An attacker could exploit this vulnerability by using a hijacked session identifier to connect to the software through the web-based GUI. A successful exploit could allow the attacker to hijack an authenticated user's browser session on the affected system. Cisco Bug IDs: CSCvd14583.