Filtered by vendor Cisco
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Filtered by product Ios
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Total
626 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2004-1464 | 1 Cisco | 1 Ios | 2026-04-16 | 5.9 Medium |
| Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafted TCP connection to the Telnet or reverse Telnet port. | ||||
| 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-2002-1024 | 1 Cisco | 4 Catos, Css11000 Content Services Switch, Ios and 1 more | 2026-04-16 | N/A |
| Cisco IOS 12.0 through 12.2, when supporting SSH, allows remote attackers to cause a denial of service (CPU consumption) via a large packet that was designed to exploit the SSH CRC32 attack detection overflow (CVE-2001-0144). | ||||
| CVE-2000-0486 | 1 Cisco | 2 Ios, Tacacs\+ | 2026-04-16 | N/A |
| Buffer overflow in Cisco TACACS+ tac_plus server allows remote attackers to cause a denial of service via a malformed packet with a long length field. | ||||
| CVE-2000-0984 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| The HTTP server in Cisco IOS 12.0 through 12.1 allows local users to cause a denial of service (crash and reload) via a URL containing a "?/" string. | ||||
| CVE-2005-0197 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| 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-2005-1057 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco IOS 12.2T, 12.3 and 12.3T, when using Easy VPN Server XAUTH version 6 authentication, allows remote attackers to bypass authentication via a "malformed packet." | ||||
| CVE-2005-1058 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco IOS 12.2T, 12.3 and 12.3T, when processing an ISAKMP profile that specifies XAUTH authentication after Phase 1 negotiation, may not process certain attributes in the ISAKMP profile that specifies XAUTH, which allows remote attackers to bypass XAUTH and move to Phase 2 negotiations. | ||||
| CVE-2005-4826 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| 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-2006-4776. | ||||
| CVE-1999-1466 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Vulnerability in Cisco routers versions 8.2 through 9.1 allows remote attackers to bypass access control lists when extended IP access lists are used on certain interfaces, the IP route cache is enabled, and the access list uses the "established" keyword. | ||||
| CVE-2006-3906 | 1 Cisco | 21 Adaptive Security Appliance Software, Ios, Pix Asa Ids and 18 more | 2026-04-16 | N/A |
| Internet Key Exchange (IKE) version 1 protocol, as implemented on Cisco IOS, VPN 3000 Concentrators, and PIX firewalls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of IKE Phase-1 packets that exceed the session expiration rate. NOTE: it has been argued that this is due to a design weakness of the IKE version 1 protocol, in which case other vendors and implementations would also be affected. | ||||
| CVE-2006-3291 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| The web interface on Cisco IOS 12.3(8)JA and 12.3(8)JA1, as used on the Cisco Wireless Access Point and Wireless Bridge, reconfigures itself when it is changed to use the "Local User List Only (Individual Passwords)" setting, which removes all security and password configurations and allows remote attackers to access the system. | ||||
| CVE-2002-2052 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco 2611 router running IOS 12.1(6.5), possibly an interim release, allows remote attackers to cause a denial of service via port scans such as (1) scanning all ports on a single host and (2) scanning a network of hosts for a single open port through the router. NOTE: the vendor could not reproduce this issue, saying that the original reporter was using an interim release of the software. | ||||
| CVE-1999-0159 | 1 Cisco | 1 Ios | 2026-04-16 | 3.5 Low |
| Attackers can crash a Cisco IOS router or device, provided they can get to an interactive prompt (such as a login). This applies to some IOS 9.x, 10.x, and 11.x releases. | ||||
| CVE-2006-4775 | 1 Cisco | 2 Catos, Ios | 2026-04-16 | N/A |
| The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) and CatOS allows remote attackers to cause a denial of service by sending a VTP update with a revision value of 0x7FFFFFFF, which is incremented to 0x80000000 and is interpreted as a negative number in a signed context. | ||||
| CVE-2005-2451 | 1 Cisco | 2 Ios, Ios Xr | 2026-04-16 | N/A |
| Cisco IOS 12.0 through 12.4 and IOS XR before 3.2, with IPv6 enabled, allows remote attackers on a local network segment to cause a denial of service (device reload) and possibly execute arbitrary code via a crafted IPv6 packet. | ||||
| CVE-2004-1776 | 1 Cisco | 1 Ios | 2026-04-16 | N/A |
| Cisco IOS 12.1(3) and 12.1(3)T allows remote attackers to read and modify device configuration data via the cable-docsis read-write community string used by the Data Over Cable Service Interface Specification (DOCSIS) standard. | ||||
| CVE-2001-1071 | 1 Cisco | 2 Catos, Ios | 2026-04-16 | N/A |
| Cisco IOS 12.2 and earlier running Cisco Discovery Protocol (CDP) allows remote attackers to cause a denial of service (memory consumption) via a flood of CDP neighbor announcements. | ||||
| CVE-2004-1775 | 1 Cisco | 2 Catos, Ios | 2026-04-16 | N/A |
| Cisco VACM (View-based Access Control MIB) for Catalyst Operating Software (CatOS) 5.5 and 6.1 and IOS 12.0 and 12.1 allows remote attackers to read and modify device configuration via the read-write community string. | ||||
| 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). | ||||