CVE-2018-0161

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software running on certain models of Cisco Catalyst Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition, aka a GET MIB Object ID Denial of Service Vulnerability. ...

CVE-2017-6663

A vulnerability in the Autonomic Networking feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause autonomic nodes of an affected system to reload, resulting in a denial of service (DoS) condition. More Information: CSCvd88936. Known Affec...

CVE-2017-12232

A vulnerability in the implementation of a protocol in Cisco Integrated Services Routers Generation 2 (ISR G2) Routers running Cisco IOS 15.0 through 15.6 could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The v...

CVE-2017-12238

A vulnerability in the Virtual Private LAN Service (VPLS) code of Cisco IOS 15.0 through 15.4 for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, adjacent attacker to cause a C6800-16P10G or C6800-16P10G-XL type line card to crash, resulting in a denial of service (DoS) conditio...

CVE-2023-20109

A vulnerability in the Cisco Group Encrypted Transport VPN (GET VPN) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute arbitrary code on an affected device or cause...

CVE-2018-0197

A vulnerability in the VLAN Trunking Protocol (VTP) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to corrupt the internal VTP database on an affected device and cause a denial of service (DoS) condition. The vulnerability is due to a log...

CVE-2023-20081

A vulnerability in the IPv6 DHCP (DHCPv6) client module of Cisco Adaptive Security Appliance (ASA) Software, Cisco Firepower Threat Defense (FTD) Software, Cisco IOS Software, and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a...

CVE-2020-3201

A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker with privileged EXEC credentials to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient i...

CVE-2018-0163

A vulnerability in the 802.1x multiple-authentication (multi-auth) feature of Cisco IOS Software could allow an unauthenticated, adjacent attacker to bypass the authentication phase on an 802.1x multi-auth port. The vulnerability is due to a logic change error introduced into the code. An attacker ...

CVE-2018-0484

A vulnerability in the access control logic of the Secure Shell (SSH) server of Cisco IOS and IOS XE Software may allow connections sourced from a virtual routing and forwarding (VRF) instance despite the absence of the vrf-also keyword in the access-class configuration. The vulnerability is due to...

CVE-2021-1385

A vulnerability in the Cisco IOx application hosting environment of multiple Cisco platforms could allow an authenticated, remote attacker to conduct directory traversal attacks and read and write files on the underlying operating system or host system. This vulnerability occurs because the device ...

CVE-2018-0466

A vulnerability in the Open Shortest Path First version 3 (OSPFv3) implementation in Cisco IOS and IOS XE Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload. The vulnerability is due to incorrect handling of specific OSPFv3 packets. An attacker could ex...

CVE-2008-5230

The Temporal Key Integrity Protocol (TKIP) implementation in unspecified Cisco products and other vendors' products, as used in WPA and WPA2 on Wi-Fi networks, has insufficient countermeasures against certain crafted and replayed packets, which makes it easier for remote attackers to decrypt packet...

CVE-2017-6665

A vulnerability in the Autonomic Networking feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to reset the Autonomic Control Plane (ACP) of an affected system and view ACP packets that are transferred in clear text within an affected system, a...

CVE-2021-34703

A vulnerability in the Link Layer Discovery Protocol (LLDP) message parser of Cisco IOS Software and Cisco IOS XE Software could allow an attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to improper initialization of a b...

CVE-2025-20181

A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated attacker with physical access to the device to execute persistent code at boot time and break the cha...

CVE-2013-1241

The ISM module in Cisco IOS on ISR G2 routers does not properly handle authentication-header packets, which allows remote authenticated users to cause a denial of service (module reload) via a series of malformed packets, aka Bug ID CSCub92025.

CVE-2019-12670

A vulnerability in the filesystem of Cisco IOS XE Software could allow an authenticated, local attacker within the IOx Guest Shell to modify the namespace container protections on an affected device. The vulnerability is due to insufficient file permissions. An attacker could exploit this vulnerabi...

CVE-2012-1338

Cisco IOS 15.0 and 15.1 on Catalyst 3560 and 3750 series switches allows remote authenticated users to cause a denial of service (device reload) by completing local web authentication quickly, aka Bug ID CSCts88664.

CVE-2016-1424

Cisco IOS 15.2(1)T1.11 and 15.2(2)TST allows remote attackers to cause a denial of service (device crash) via a crafted LLDP packet, aka Bug ID CSCun63132.

CVE-2024-20414

A vulnerability in the web UI feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected system through the web UI. This vulnerability is due to incorrectly accepting configuration chan...

CVE-2015-4185

The TCL interpreter in Cisco IOS 15.2 does not properly maintain the vty state, which allows local users to gain privileges by starting a session very soon after a TCL script execution, aka Bug ID CSCuq24202.

CVE-2017-12304

A vulnerability in the IOS daemon (IOSd) web-based management interface of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface on an affected device. The vulnerability is du...

CVE-2014-3409

The Ethernet Connectivity Fault Management (CFM) handling feature in Cisco IOS 12.2(33)SRE9a and earlier and IOS XE 3.13S and earlier allows remote attackers to cause a denial of service (device reload) via malformed CFM packets, aka Bug ID CSCuq93406.

CVE-2015-0687

The SNMP implementation in Cisco IOS 15.1(2)SG4 on Catalyst 4500 devices, when single-switch Virtual Switching System (VSS) is configured, allows remote authenticated users to cause a denial of service (device crash) by performing SNMP polling, aka Bug ID CSCuq04574.

CVE-2015-6263

The RADIUS client implementation in Cisco IOS 15.4(3)M2.2, when a shared RADIUS secret is configured, allows remote RADIUS servers to cause a denial of service (device reload) via malformed answers, aka Bug ID CSCuu59324.

CVE-2012-5017

Cisco IOS before 15.1(1)SY1 allows remote authenticated users to cause a denial of service (device reload) by establishing a VPN session and then sending malformed IKEv2 packets, aka Bug ID CSCub39268.

CVE-2015-0669

The Autonomic Networking Infrastructure (ANI) implementation in Cisco IOS 15.4S and 15.4(3)S allows remote attackers to modify configuration settings or cause a denial of service (partial service outage) by sending crafted Autonomic Networking (AN) messages on an intranet network, aka Bug ID CSCup6...

CVE-2005-0197

Cisco IOS 12.1T, 12.2, 12.2T, 12.3 and 12.3T, with Multi Protocol Label Switching (MPLS) installed but disabled, allows remote attackers to cause a denial of service (device reload) via a crafted packet sent to the disabled interface.

CVE-2014-2146

The Zone-Based Firewall (ZBFW) functionality in Cisco IOS, possibly 15.4 and earlier, and IOS XE, possibly 3.13 and earlier, mishandles zone checking for existing sessions, which allows remote attackers to bypass intended resource-access restrictions via spoofed traffic that matches one of these se...

CVE-2014-3273

The LLDP implementation in Cisco IOS allows remote attackers to cause a denial of service (device reload) via a malformed packet, aka Bug ID CSCum96282.

CVE-2007-1258

Unspecified vulnerability in Cisco IOS 12.2SXA, SXB, SXD, and SXF; and the MSFC2, MSFC2a and MSFC3 running in Hybrid Mode on Cisco Catalyst 6000, 6500 and Cisco 7600 series systems; allows remote attackers on a local network segment to cause a denial of service (software reload) via a certain MPLS ...

CVE-2015-0731

The ISDN implementation in Cisco IOS 15.3S allows remote attackers to cause a denial of service (device reload) via malformed Q931 SETUP messages, aka Bug ID CSCut37890.

CVE-2009-0471

Cross-site request forgery (CSRF) vulnerability in the HTTP server in Cisco IOS 12.4(23) allows remote attackers to execute arbitrary commands, as demonstrated by executing the hostname command with a level/15/configure/-/hostname request.

CVE-2012-1366

Cisco IOS before 15.1(1)SY on ASR 1000 devices, when Multicast Listener Discovery (MLD) tracking is enabled for IPv6, allows remote attackers to cause a denial of service (device reload) via crafted MLD packets, aka Bug ID CSCtz28544.

CVE-2012-5014

Cisco IOS before 15.1(2)SY allows remote authenticated users to cause a denial of service (device crash) by establishing an SSH session from a client and then placing this client into a (1) slow or (2) idle state, aka Bug ID CSCto87436.

CVE-2014-3299

Cisco IOS allows remote authenticated users to cause a denial of service (device reload) via malformed IPsec packets, aka Bug ID CSCui79745.

CVE-2012-5030

Cisco IOS before 15.2(4)S6 does not initialize an unspecified variable, which might allow remote authenticated users to cause a denial of service (CPU consumption, watchdog timeout, crash) by walking specific SNMP objects.

CVE-2015-0708

Cisco IOS 15.4S, 15.4SN, and 15.5S and IOS XE 3.13S and 3.14S allow remote attackers to cause a denial of service (device crash) by including an IA_NA option in a DHCPv6 Solicit message on the local network, aka Bug ID CSCur29956.

CVE-2015-0709

Cisco IOS 15.5S and IOS XE allow remote authenticated users to cause a denial of service (device crash) by leveraging knowledge of the RADIUS secret and sending crafted RADIUS packets, aka Bug ID CSCur21348.

CVE-2015-6294

Cisco IOS 15.2(3)E and earlier and IOS XE 3.6(2)E and earlier allow remote attackers to cause a denial of service (functionality loss) via crafted Cisco Discovery Protocol (CDP) packets, aka Bug ID CSCuu25770.

CVE-2020-3476

A vulnerability in the CLI implementation of a specific command of Cisco IOS XE Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying host file system. The vulnerability is due to insufficient validation of the parameters of a specific CLI command. An ...

CVE-2012-1327

dot11t/t_if_dot11_hal_ath.c in Cisco IOS 12.3, 12.4, 15.0, and 15.1 allows remote attackers to cause a denial of service (assertion failure and reboot) via 802.11 wireless traffic, as demonstrated by a video call from Apple iOS 5.0 on an iPhone 4S, aka Bug ID CSCtt94391.

CVE-2005-4826

Unspecified vulnerability in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(22)EA3 on Catalyst 2950T switches allows remote attackers to cause a denial of service (device reboot) via a crafted Subset-Advert message packet, a different issue than CVE-2006-4774, CVE-2006-4775, and CVE-200...

CVE-2007-2587

The IOS FTP Server in Cisco IOS 11.3 through 12.4 allows remote authenticated users to cause a denial of service (IOS reload) via unspecified vectors involving transferring files (aka bug ID CSCse29244).

CVE-2007-4295

Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows remote attackers to execute arbitrary code via a malformed SIP packet, aka CSCsi80749.

CVE-2011-0348

Cisco IOS 12.4(11)MD, 12.4(15)MD, 12.4(22)MD, 12.4(24)MD before 12.4(24)MD3, 12.4(22)MDA before 12.4(22)MDA5, and 12.4(24)MDA before 12.4(24)MDA3 on the Cisco Content Services Gateway Second Generation (aka CSG2) allows remote attackers to bypass intended access restrictions and intended billing re...

CVE-2012-5422

Unspecified vulnerability in Cisco IOS before 15.3(2)T on AS5400 devices allows remote authenticated users to cause a denial of service (spurious errors) via unknown vectors, aka Bug ID CSCub61009.

CVE-2014-2131

The packet driver in Cisco IOS allows remote attackers to cause a denial of service (device reload) via a series of (1) Virtual Switching Systems (VSS) or (2) Bidirectional Forwarding Detection (BFD) packets, aka Bug IDs CSCug41049 and CSCue61890.

CVE-2017-12211

A vulnerability in the IPv6 Simple Network Management Protocol (SNMP) code of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to cause high CPU usage or a reload of the device. The vulnerability is due to IPv6 sub block corruption. An attacker could exploit this vu...