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CVSS: 5.0EPSS: 1%CPEs: 76EXPL: 0

Cisco IOS 12.0S through 12.3YH allows remote attackers to cause a denial of service (device restart) via a crafted IPv6 packet. • http://www.cisco.com/warp/public/707/cisco-sa-20050126-ipv6.shtml http://www.kb.cert.org/vuls/id/472582 http://www.us-cert.gov/cas/techalerts/TA05-026A.html https://exchange.xforce.ibmcloud.com/vulnerabilities/19072 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5813 •

CVSS: 5.0EPSS: 1%CPEs: 4EXPL: 1

Cisco IOS 12.1YD, 12.2T, 12.3 and 12.3T, when configured for the IOS Telephony Service (ITS), CallManager Express (CME) or Survivable Remote Site Telephony (SRST), allows remote attackers to cause a denial of service (device reboot) via a malformed packet to the SCCP port. • http://secunia.com/advisories/13913 http://securitytracker.com/id?1012945 http://www.cisco.com/warp/public/707/cisco-sa-20050119-itscme.shtml https://exchange.xforce.ibmcloud.com/vulnerabilities/18956 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4849 •

CVSS: 5.9EPSS: 1%CPEs: 1EXPL: 0

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. Cisco IOS contains an unspecified vulnerability that may block further telnet, reverse telnet, Remote Shell (RSH), Secure Shell (SSH), and in some cases, Hypertext Transport Protocol (HTTP) access to the Cisco device. • http://secunia.com/advisories/12395 http://securitytracker.com/id?1011079 http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml http://www.kb.cert.org/vuls/id/384230 http://www.securityfocus.com/bid/11060 https://exchange.xforce.ibmcloud.com/vulnerabilities/17131 •

CVSS: 5.0EPSS: 2%CPEs: 77EXPL: 0

Cisco IOS 12.0S, 12.2, and 12.3, with Open Shortest Path First (OSPF) enabled, allows remote attackers to cause a denial of service (device reload) via a malformed OSPF packet. • http://secunia.com/advisories/12322 http://www.ciac.org/ciac/bulletins/o-199.shtml http://www.cisco.com/warp/public/707/cisco-sa-20040818-ospf.shtml http://www.kb.cert.org/vuls/id/989406 http://www.securityfocus.com/bid/10971 https://exchange.xforce.ibmcloud.com/vulnerabilities/17033 •

CVSS: 5.0EPSS: 1%CPEs: 17EXPL: 0

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. • http://www.ciac.org/ciac/bulletins/p-034.shtml http://www.cisco.com/warp/public/707/cisco-sa-20041110-dhcp.shtml http://www.kb.cert.org/vuls/id/630104 http://www.us-cert.gov/cas/techalerts/TA04-316A.html https://exchange.xforce.ibmcloud.com/vulnerabilities/18021 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5632 •