Vulnerabilities (CVE)

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Filtered by vendor Cisco Subscribe
Filtered by product Ios Xe
Total 455 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2020-3479 1 Cisco 27 1100 Integrated Services Router, 4221 Integrated Services Router, 4321 Integrated Services Router and 24 more 2021-10-07 7.8 HIGH 7.5 HIGH
A vulnerability in the implementation of Multiprotocol Border Gateway Protocol (MP-BGP) for the Layer 2 VPN (L2VPN) Ethernet VPN (EVPN) address family in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of Border Gateway Protocol (BGP) update messages that contain crafted EVPN attributes. An attacker could exploit this vulnerability by sending BGP update messages with specific, malformed attributes to an affected device. A successful exploit could allow the attacker to cause an affected device to crash, resulting in a DoS condition.
CVE-2021-1565 1 Cisco 54 Catalyst 9300-24p-a, Catalyst 9300-24p-e, Catalyst 9300-24s-a and 51 more 2021-10-06 5.0 MEDIUM 8.6 HIGH
Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.
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-2021-1624 1 Cisco 20 Asr 1000, Asr 1000-esp100, Asr 1000-x and 17 more 2021-10-05 5.0 MEDIUM 8.6 HIGH
A vulnerability in the Rate Limiting Network Address Translation (NAT) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause high CPU utilization in the Cisco QuantumFlow Processor of an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to mishandling of the rate limiting feature within the QuantumFlow Processor. An attacker could exploit this vulnerability by sending large amounts of traffic that would be subject to NAT and rate limiting through an affected device. A successful exploit could allow the attacker to cause the QuantumFlow Processor utilization to reach 100 percent on the affected device, resulting in a DoS condition.
CVE-2021-1625 1 Cisco 1 Ios Xe 2021-10-05 4.3 MEDIUM 5.8 MEDIUM
A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not inspected when the Zone-Based Policy Firewall has either Unified Threat Defense (UTD) or Application Quality of Experience (AppQoE) configured. An attacker could exploit this vulnerability by attempting to send UDP or ICMP flows through the network. A successful exploit could allow the attacker to inject traffic through the Zone-Based Policy Firewall, resulting in traffic being dropped because it is incorrectly classified or in incorrect reporting figures being produced by high-speed logging (HSL).
CVE-2021-34696 1 Cisco 23 Asr 902, Asr 903, Asr 907 and 20 more 2021-10-05 5.0 MEDIUM 5.8 MEDIUM
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
CVE-2021-34697 1 Cisco 1 Ios Xe 2021-10-05 5.0 MEDIUM 8.6 HIGH
A vulnerability in the Protection Against Distributed Denial of Service Attacks feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct denial of service (DoS) attacks to or through the affected device. This vulnerability is due to incorrect programming of the half-opened connections limit, TCP SYN flood limit, or TCP SYN cookie features when the features are configured in vulnerable releases of Cisco IOS XE Software. An attacker could exploit this vulnerability by attempting to flood traffic to or through the affected device. A successful exploit could allow the attacker to initiate a DoS attack to or through an affected device.
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-2013-5543 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-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-2013-5546 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-2013-5547 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-2013-1164 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-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-2013-1165 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-2013-1166 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-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-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-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-2021-34723 1 Cisco 21 Asr 1000-x, Asr 1001, Asr 1001-x and 18 more 2021-09-30 6.9 MEDIUM 6.7 MEDIUM
A vulnerability in a specific CLI command that is run on Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the configuration database of an affected device. This vulnerability is due to insufficient validation of specific CLI command parameters. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content of the configuration database and gain root-level access to an affected device.