Vulnerabilities (CVE)

Filtered by vendor Cisco Subscribe
Filtered by product Ios Xe
Total 481 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2020-3228 1 Cisco 8 Ios, Ios Xe, Nexus 1000v and 5 more 2021-10-18 7.8 HIGH 8.6 HIGH
A vulnerability in Security Group Tag Exchange Protocol (SXP) in Cisco IOS Software, Cisco IOS XE Software, and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because crafted SXP packets are mishandled. An attacker could exploit this vulnerability by sending specifically crafted SXP packets to the affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
CVE-2020-3217 1 Cisco 20 Ios, Ios Xe, Ios Xr and 17 more 2021-10-18 8.3 HIGH 8.8 HIGH
A vulnerability in the Topology Discovery Service of Cisco One Platform Kit (onePK) in Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient length restrictions when the onePK Topology Discovery Service parses Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol message to an affected device. An exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges, or to cause a process crash, which could result in a reload of the device and cause a DoS condition.
CVE-2019-12657 1 Cisco 118 4321 Integrated Services Router, 4331 Integrated Services Router, 4351 Integrated Services Router and 115 more 2021-10-18 7.8 HIGH 7.5 HIGH
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.
CVE-2019-1904 1 Cisco 11 4321 Integrated Services Router, 4331 Integrated Services Router, 4351 Integrated Services Router and 8 more 2021-10-18 6.8 MEDIUM 8.8 HIGH
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.
CVE-2018-0177 1 Cisco 117 4321 Integrated Services Router, 4331 Integrated Services Router, 4351 Integrated Services Router and 114 more 2021-10-18 7.8 HIGH 7.5 HIGH
A vulnerability in the IP Version 4 (IPv4) processing code of Cisco IOS XE Software running on Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IPv4 packets. An attacker could exploit this vulnerability by sending specific IPv4 packets to an IPv4 address on an affected device. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. If the switch does not reboot when under attack, it would require manual intervention to reload the device. This vulnerability affects Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches that are running Cisco IOS XE Software Release 16.1.1 or later, until the first fixed release, and are configured with an IPv4 address. Cisco Bug IDs: CSCvd80714.
CVE-2009-2051 1 Cisco 3 Ios, Ios Xe, Unified Communications Manager 2021-10-06 7.8 HIGH N/A
Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), and 7.x before 7.1(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a malformed SIP INVITE message that triggers an improper call to the sipSafeStrlen function, aka Bug IDs CSCsz40392 and CSCsz43987.
CVE-2014-3284 1 Cisco 9 Asr 1001, Asr 1002, Asr 1002-x and 6 more 2021-10-05 6.1 MEDIUM N/A
Cisco IOS XE on ASR1000 devices, when PPPoE termination is enabled, allows remote attackers to cause a denial of service (device reload) via a malformed PPPoE packet, aka Bug ID CSCuo55180.
CVE-2014-2183 1 Cisco 9 Asr 1001, Asr 1002, Asr 1002-x and 6 more 2021-10-05 6.3 MEDIUM N/A
The L2TP module in Cisco IOS XE 3.10S(.2) and earlier on ASR 1000 routers allows remote authenticated users to cause a denial of service (ESP card reload) via a malformed L2TP packet, aka Bug ID CSCun09973.
CVE-2013-5547 1 Cisco 7 Asr 1001, Asr 1002, Asr 1002-x and 4 more 2021-10-05 7.8 HIGH N/A
Cisco IOS XE 3.9 before 3.9.2S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) by sending malformed EoGRE packets over (1) IPv4 or (2) IPv6, aka Bug ID CSCuf08269.
CVE-2013-5546 1 Cisco 7 Asr 1001, Asr 1002, Asr 1002-x and 4 more 2021-10-05 7.8 HIGH N/A
The TCP reassembly feature in Cisco IOS XE 3.7 before 3.7.3S and 3.8 before 3.8.1S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) via large TCP packets that are processed by the (1) NAT or (2) ALG component, aka Bug ID CSCud72509.
CVE-2013-5545 1 Cisco 7 Asr 1001, Asr 1002, Asr 1002-x and 4 more 2021-10-05 7.8 HIGH N/A
The PPTP ALG implementation in Cisco IOS XE 3.9 before 3.9.2S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) by sending many PPTP packets over NAT, aka Bug ID CSCuh19936.
CVE-2013-5543 1 Cisco 7 Asr 1001, Asr 1002, Asr 1002-x and 4 more 2021-10-05 7.8 HIGH N/A
Cisco IOS XE 3.4 before 3.4.2S and 3.5 before 3.5.1S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) via malformed ICMP error packets associated with a (1) TCP or (2) UDP session that is under inspection by the Zone-Based Firewall (ZBFW) component, aka Bug ID CSCtt26470.
CVE-2013-2779 1 Cisco 9 Asr 1001, Asr 1002, Asr 1002-x and 6 more 2021-10-05 7.8 HIGH N/A
Cisco IOS XE 3.4 before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers (ASR) does not properly implement the Cisco Multicast Leaf Recycle Elimination (MLRE) feature, which allows remote attackers to cause a denial of service (card reload) via fragmented IPv6 MVPN (aka MVPNv6) packets, aka Bug ID CSCub34945, a different vulnerability than CVE-2013-1164.
CVE-2013-1167 1 Cisco 9 Asr 1001, Asr 1002, Asr 1002-x and 6 more 2021-10-05 7.1 HIGH N/A
Cisco IOS XE 3.2 through 3.4 before 3.4.2S, and 3.5, on 1000 series Aggregation Services Routers (ASR), when bridge domain interface (BDI) is enabled, allows remote attackers to cause a denial of service (card reload) via packets that are not properly handled during the processing of encapsulation, aka Bug ID CSCtt11558.
CVE-2013-1166 1 Cisco 8 Asr 1001, Asr 1002, Asr 1002-x and 5 more 2021-10-05 7.8 HIGH N/A
Cisco IOS XE 3.2 through 3.4 before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers (ASR), when VRF-aware NAT and SIP ALG are enabled, allows remote attackers to cause a denial of service (card reload) by sending many SIP packets, aka Bug ID CSCuc65609.
CVE-2013-1165 1 Cisco 8 Asr 1001, Asr 1002, Asr 1002-x and 5 more 2021-10-05 7.8 HIGH N/A
Cisco IOS XE 2.x and 3.x before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers (ASR) allows remote attackers to cause a denial of service (card reload) by sending many crafted L2TP packets, aka Bug ID CSCtz23293.
CVE-2013-1164 1 Cisco 7 Asr 1001, Asr 1002, Asr 1002-x and 4 more 2021-10-05 7.8 HIGH N/A
Cisco IOS XE 3.4 before 3.4.4S, 3.5, and 3.6 on 1000 series Aggregation Services Routers (ASR) does not properly implement the Cisco Multicast Leaf Recycle Elimination (MLRE) feature, which allows remote attackers to cause a denial of service (card reload) via fragmented IPv6 multicast packets, aka Bug ID CSCtz97563.
CVE-2012-5723 1 Cisco 9 Asr 1001, Asr 1002, Asr 1002-x and 6 more 2021-10-05 6.1 MEDIUM N/A
Cisco ASR 1000 devices with software before 3.8S, when BDI routing is enabled, allow remote attackers to cause a denial of service (device reload) via crafted (1) broadcast or (2) multicast ICMP packets with fragmentation, aka Bug ID CSCub55948.
CVE-2020-3222 1 Cisco 1 Ios Xe 2021-09-22 3.3 LOW 4.3 MEDIUM
A vulnerability in the web-based user interface (web UI) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to bypass access control restrictions on an affected device. The vulnerability is due to the presence of a proxy service at a specific endpoint of the web UI. An attacker could exploit this vulnerability by connecting to the proxy service. An exploit could allow the attacker to bypass access restrictions on the network by proxying their access request through the management network of the affected device. As the proxy is reached over the management virtual routing and forwarding (VRF), this could reduce the effectiveness of the bypass.
CVE-2020-3235 2 Cisco, Oracle 7 Catalyst 4503-e, Catalyst 4506-e, Catalyst 4507r\+e and 4 more 2021-09-17 6.3 MEDIUM 7.7 HIGH
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the software processes specific SNMP object identifiers. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: To exploit this vulnerability by using SNMPv2c or earlier, the attacker must know the SNMP read-only community string for an affected system. To exploit this vulnerability by using SNMPv3, the attacker must know the user credentials for the affected system.