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Search Results (1230 CVEs found)
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-1999-0157 | 1 Cisco | 2 Ios, Pix Firewall Software | 2026-04-16 | N/A |
| Cisco PIX firewall and CBAC IP fragmentation attack results in a denial of service. | ||||
| CVE-2003-1109 | 1 Cisco | 4 Ios, Ip Phone 7940, Ip Phone 7960 and 1 more | 2026-04-16 | N/A |
| The Session Initiation Protocol (SIP) implementation in multiple Cisco products including IP Phone models 7940 and 7960, IOS versions in the 12.2 train, and Secure PIX 5.2.9 to 6.2.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted INVITE messages, as demonstrated by the OUSPG PROTOS c07-sip test suite. | ||||
| CVE-2003-0647 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Buffer overflow in the HTTP server for Cisco IOS 12.2 and earlier allows remote attackers to execute arbitrary code via an extremely long (2GB) HTTP GET request. | ||||
| CVE-2003-0851 | 3 Cisco, Openssl, Redhat | 7 Css11000 Content Services Switch, Ios, Pix Firewall and 4 more | 2026-04-16 | N/A |
| OpenSSL 0.9.6k allows remote attackers to cause a denial of service (crash via large recursion) via malformed ASN.1 sequences. | ||||
| CVE-2004-1111 | 1 Cisco | 10 7200 Router, 7300 Router, 7500 Router and 7 more | 2026-04-16 | N/A |
| Cisco IOS 2.2(18)EW, 12.2(18)EWA, 12.2(14)SZ, 12.2(18)S, 12.2(18)SE, 12.2(18)SV, 12.2(18)SW, and other versions without the "no service dhcp" command, keep undeliverable DHCP packets in the queue instead of dropping them, which allows remote attackers to cause a denial of service (dropped traffic) via multiple undeliverable DHCP packets that exceed the input queue size. | ||||
| CVE-1999-1175 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Web Cache Control Protocol (WCCP) in Cisco Cache Engine for Cisco IOS 11.2 and earlier does not use authentication, which allows remote attackers to redirect HTTP traffic to arbitrary hosts via WCCP packets to UDP port 2048. | ||||
| CVE-2003-0567 | 1 Cisco | 3 Ios, Ons 15454 Optical Transport Platform, Optical Networking Systems Software | 2026-04-16 | N/A |
| Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service (traffic block) by sending a particular sequence of IPv4 packets to an interface on the device, causing the input queue on that interface to be marked as full. | ||||
| CVE-2005-3921 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cross-site scripting (XSS) vulnerability in Cisco IOS Web Server for IOS 12.0(2a) allows remote attackers to inject arbitrary web script or HTML by (1) packets containing HTML that an administrator views via an HTTP interface to the contents of memory buffers, as demonstrated by the URI /level/15/exec/-/buffers/assigned/dump; or (2) sending the router Cisco Discovery Protocol (CDP) packets with HTML payload that an administrator views via the CDP status pages. NOTE: these vectors were originally reported as being associated with the dump and packet options in /level/15/exec/-/show/buffers. | ||||
| CVE-2006-4774 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) allows remote attackers to cause a denial of service by sending a VTP version 1 summary frame with a VTP version field value of 2. | ||||
| CVE-2003-0512 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco IOS 12.2 and earlier generates a "% Login invalid" message instead of prompting for a password when an invalid username is provided, which allows remote attackers to identify valid usernames on the system and conduct brute force password guessing, as reported for the Aironet Bridge. | ||||
| CVE-2005-3481 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco IOS 12.0 to 12.4 might allow remote attackers to execute arbitrary code via a heap-based buffer overflow in system timers. NOTE: this issue does not correspond to a specific vulnerability, rather a general weakness that only increases the feasibility of exploitation of any vulnerabilities that might exist. Such design-level weaknesses normally are not included in CVE, so perhaps this issue should be REJECTed. | ||||
| CVE-2001-0650 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco devices IOS 12.0 and earlier allow a remote attacker to cause a crash, or bad route updates, via malformed BGP updates with unrecognized transitive attribute. | ||||
| CVE-2004-0714 | 1 Cisco | 3 Ios, Ons 15454e Optical Transport Platform, Optical Networking Systems Software | 2026-04-16 | N/A |
| Cisco Internetwork Operating System (IOS) 12.0S through 12.3T attempts to process SNMP solicited operations on improper ports (UDP 162 and a randomly chosen UDP port), which allows remote attackers to cause a denial of service (device reload and memory corruption). | ||||
| CVE-1999-0230 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Buffer overflow in Cisco 7xx routers through the telnet service. | ||||
| CVE-2002-1768 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco IOS 11.1 through 12.2, when HSRP support is not enabled, allows remote attackers to cause a denial of service (CPU consumption) via randomly sized UDP packets to the Hot Standby Routing Protocol (HSRP) port 1985. | ||||
| CVE-2025-20334 | 1 Cisco | 1 Ios Xe Software | 2026-04-15 | 8.8 High |
| A vulnerability in the HTTP API subsystem of Cisco IOS XE Software could allow a remote attacker to inject commands that will execute with root privileges into the underlying operating system. This vulnerability is due to insufficient input validation. An attacker with administrative privileges could exploit this vulnerability by authenticating to an affected system and performing an API call with crafted input. Alternatively, an unauthenticated attacker could persuade a legitimate user with administrative privileges who is currently logged in to the system to click a crafted link. A successful exploit could allow the attacker to execute arbitrary commands as the root user. | ||||
| CVE-2024-20318 | 1 Cisco | 1 Ios Xr Software | 2026-04-15 | 7.4 High |
| A vulnerability in the Layer 2 Ethernet services of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the line card network processor to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of specific Ethernet frames that are received on line cards that have the Layer 2 services feature enabled. An attacker could exploit this vulnerability by sending specific Ethernet frames through an affected device. A successful exploit could allow the attacker to cause the ingress interface network processor to reset, resulting in a loss of traffic over the interfaces that are supported by the network processor. Multiple resets of the network processor would cause the line card to reset, resulting in a DoS condition. | ||||
| CVE-2025-20340 | 1 Cisco | 1 Ios Xr Software | 2026-04-15 | 7.4 High |
| A vulnerability in the Address Resolution Protocol (ARP) implementation of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to trigger a broadcast storm, leading to a denial of service (DoS) condition on an affected device. This vulnerability is due to how Cisco IOS XR Software processes a high, sustained rate of ARP traffic hitting the management interface. Under certain conditions, an attacker could exploit this vulnerability by sending an excessive amount of traffic to the management interface of an affected device, overwhelming its ARP processing capabilities. A successful exploit could result in degraded device performance, loss of management connectivity, and complete unresponsiveness of the system, leading to a DoS condition. | ||||
| CVE-2025-20316 | 1 Cisco | 1 Ios Xe Software | 2026-04-15 | 5.3 Medium |
| A vulnerability in the access control list (ACL) programming of Cisco IOS XE Software for Cisco Catalyst 9500X and 9600X Series Switches could allow an unauthenticated, remote attacker to bypass a configured ACL on an affected device. This vulnerability is due to the flooding of traffic from an unlearned MAC address on a switch virtual interface (SVI) that has an egress ACL applied. An attacker could exploit this vulnerability by causing the VLAN to flush its MAC address table. This condition can also occur if the MAC address table is full. A successful exploit could allow the attacker to bypass an egress ACL on an affected device. | ||||
| CVE-2022-20655 | 1 Cisco | 8 Carrier Packet Transport, Catalyst Sd-wan Manager, Enterprise Nfv Infrastructure Software and 5 more | 2026-04-15 | 8.8 High |
| A vulnerability in the implementation of the CLI on a device that is running ConfD could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient validation of a process argument on an affected device. An attacker could exploit this vulnerability by injecting commands during the execution of this process. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with the privilege level of ConfD, which is commonly root. | ||||