Search vulnerabilities

Use the Query Builder to create your own search query, or check out the documentation to learn the search syntax.

Results 26

Export CSV
CVE-2020-3423

Cisco IOS XE Software Arbitrary Code Execution Vulnerability

A vulnerability in the implementation of the Lua interpreter that is integrated in Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code with root privileges on the underlying Linux operating system (OS) of an affected device. The vulnerability is due to insufficient restrictions on Lua function calls within the context of user-supplied Lua scripts. An attacker with valid administrative credentials could exploit this vulnerability by submitting a malicious Lua script. When this file is processed, an exploitable buffer overflow condition could occur. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying Linux OS of the affected device.

CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
1100 Integrated Services Router 1101 Integrated Services Router 1109 Integrated Services Router and 23 more
CVE-2019-1904

Cisco IOS XE Software Web UI Cross-Site Request Forgery Vulnerability

A vulnerability in the web-based UI (web UI) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected system. The vulnerability is due to insufficient CSRF protections for the web UI on an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to follow a malicious link. A successful exploit could allow the attacker to perform arbitrary actions with the privilege level of the affected user. If the user has administrative privileges, the attacker could alter the configuration, execute commands, or reload an affected device. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software with the HTTP Server feature enabled. The default state of the HTTP Server feature is version dependent.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
4321 Integrated Services Router 4331 Integrated Services Router 4351 Integrated Services Router and 8 more
CVE-2019-12657

Cisco IOS XE Software Unified Threat Defense Denial of Service Vulnerability

A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper validation of IPv6 packets through the UTD feature. An attacker could exploit this vulnerability by sending IPv6 traffic through an affected device that is configured with UTD. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Vendors
Cisco
Products
4321 Integrated Services Router 4331 Integrated Services Router 4351 Integrated Services Router and 115 more
CVE-2019-12654

Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability

A vulnerability in the common Session Initiation Protocol (SIP) library of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on an internal data structure. An attacker could exploit this vulnerability by sending a sequence of malicious SIP messages to an affected device. An exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the iosd process. This triggers a reload of the device.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Vendors
Cisco
Products
1000 Integrated Services Router 1100 Integrated Services Router 4000 Integrated Services Router and 14 more
CVE-2019-12647

Cisco IOS and IOS XE Software IP Ident Denial of Service Vulnerability

A vulnerability in the Ident protocol handler of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability exists because the affected software incorrectly handles memory structures, leading to a NULL pointer dereference. An attacker could exploit this vulnerability by opening a TCP connection to specific ports and sending traffic over that connection. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Vendors
Cisco
Products
1100 4221 4321 and 25 more
CVE-2019-12643

Cisco REST API Container for IOS XE Software Authentication Bypass Vulnerability

A vulnerability in the Cisco REST API virtual service container for Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass authentication on the managed Cisco IOS XE device. The vulnerability is due to an improper check performed by the area of code that manages the REST API authentication service. An attacker could exploit this vulnerability by submitting malicious HTTP requests to the targeted device. A successful exploit could allow the attacker to obtain the token-id of an authenticated user. This token-id could be used to bypass authentication and execute privileged actions through the interface of the REST API virtual service container on the affected Cisco IOS XE device. The REST API interface is not enabled by default and must be installed and activated separately on IOS XE devices. See the Details section for more information.

CVSS 3.0 · 10 Critical EPSS 5.3% KEV · Not listed
Vendors
Cisco
Products
4221 Integrated Services Router 4321 Integrated Services Router 4331 Integrated Services Router and 5 more