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Cisco » IOS : Security Vulnerabilities (CVSS score between 7 and 7.99)

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2018-0175 134 DoS Exec Code 2018-03-28 2019-10-09
7.9
None Local Network Medium Not required Complete Complete Complete
Format String vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCvd73664.
2 CVE-2002-2208 DoS 2002-12-31 2018-10-19
7.8
None Remote Low Not required None None Complete
Extended Interior Gateway Routing Protocol (EIGRP), as implemented in Cisco IOS 11.3 through 12.2 and other products, allows remote attackers to cause a denial of service (flood) by sending a large number of spoofed EIGRP neighbor announcements, which results in an ARP storm on the local network.
3 CVE-2002-2315 DoS 2002-12-31 2008-09-05
7.8
None Remote Low Not required None None Complete
Cisco IOS 11.2.x and 12.0.x does not limit the size of its redirect table, which allows remote attackers to cause a denial of service (memory consumption) via spoofed ICMP redirect packets to the router.
4 CVE-2003-0567 20 DoS 2003-08-18 2018-10-30
7.8
None Remote Low Not required None None Complete
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.
5 CVE-2005-4258 DoS 2005-12-15 2017-07-20
7.8
None Remote Low Not required None None Complete
Unspecified Cisco Catalyst Switches allow remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LanD). NOTE: the provenance of this issue is unknown; the details are obtained solely from the BID.
6 CVE-2006-4774 399 DoS 2006-09-14 2018-10-17
7.8
None Remote Low Not required None None Complete
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.
7 CVE-2006-4775 399 DoS 2006-09-14 2018-10-17
7.8
None Remote Low Not required None None Complete
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.
8 CVE-2007-0648 DoS 2007-02-01 2017-10-11
7.8
None Remote Low Not required None None Complete
Cisco IOS after 12.3(14)T, 12.3(8)YC1, 12.3(8)YG, and 12.4, with voice support and without Session Initiated Protocol (SIP) configured, allows remote attackers to cause a denial of service (crash) by sending a crafted packet to port 5060/UDP.
9 CVE-2007-2688 2007-05-16 2018-10-30
7.8
None Remote Low Not required None None Complete
The Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set do not properly handle certain full-width and half-width Unicode character encodings, which might allow remote attackers to evade detection of HTTP traffic.
10 CVE-2008-1152 399 DoS 2008-03-27 2017-09-29
7.8
None Remote Low Not required None None Complete
The data-link switching (DLSw) component in Cisco IOS 12.0 through 12.4 allows remote attackers to cause a denial of service (device restart or memory consumption) via crafted (1) UDP port 2067 or (2) IP protocol 91 packets.
11 CVE-2008-2739 DoS 2008-09-26 2018-10-30
7.8
None Remote Low Not required None None Complete
The SERVICE.DNS signature engine in the Intrusion Prevention System (IPS) in Cisco IOS 12.3 and 12.4 allows remote attackers to cause a denial of service (device crash or hang) via network traffic that triggers unspecified IPS signatures, a different vulnerability than CVE-2008-1447.
12 CVE-2008-3808 DoS 2008-09-26 2018-10-30
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows remote attackers to cause a denial of service (device reload) via a crafted Protocol Independent Multicast (PIM) packet.
13 CVE-2008-3810 20 DoS 2008-09-26 2017-09-29
7.8
None Remote Low Not required None None Complete
Cisco IOS 12.2 and 12.4, when NAT Skinny Call Control Protocol (SCCP) Fragmentation Support is enabled, allows remote attackers to cause a denial of service (device reload) via segmented SCCP messages, aka CSCsg22426, a different vulnerability than CVE-2008-3811.
14 CVE-2008-3811 20 DoS 2008-09-26 2017-09-29
7.8
None Remote Low Not required None None Complete
Cisco IOS 12.2 and 12.4, when NAT Skinny Call Control Protocol (SCCP) Fragmentation Support is enabled, allows remote attackers to cause a denial of service (device reload) via segmented SCCP messages, aka Cisco Bug ID CSCsi17020, a different vulnerability than CVE-2008-3810.
15 CVE-2009-0626 399 DoS 2009-03-27 2017-09-29
7.8
None Remote Low Not required None None Complete
The SSLVPN feature in Cisco IOS 12.3 through 12.4 allows remote attackers to cause a denial of service (device reload or hang) via a crafted HTTPS packet.
16 CVE-2009-0631 DoS 2009-03-27 2017-09-29
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.0 through 12.4, when configured with (1) IP Service Level Agreements (SLAs) Responder, (2) Session Initiation Protocol (SIP), (3) H.323 Annex E Call Signaling Transport, or (4) Media Gateway Control Protocol (MGCP) allows remote attackers to cause a denial of service (blocked input queue on the inbound interface) via a crafted UDP packet.
17 CVE-2009-0636 DoS 2009-03-27 2017-08-17
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.0 through 12.4, when SIP voice services are enabled, allows remote attackers to cause a denial of service (device crash) via a valid SIP message.
18 CVE-2009-2051 DoS 2009-08-27 2021-10-06
7.8
None Remote Low Not required None None Complete
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.
19 CVE-2009-2866 DoS 2009-09-28 2017-08-17
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.2 through 12.4 allows remote attackers to cause a denial of service (device reload) via a crafted H.323 packet, aka Bug ID CSCsz38104.
20 CVE-2009-2867 DoS 2009-09-28 2017-09-19
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.2XNA, 12.2XNB, 12.2XNC, 12.2XND, 12.4T, 12.4XZ, and 12.4YA, when Zone-Based Policy Firewall SIP Inspection is enabled, allows remote attackers to cause a denial of service (device reload) via a crafted SIP transit packet, aka Bug ID CSCsr18691.
21 CVE-2009-2868 DoS 2009-09-28 2009-10-01
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.2 through 12.4, when certificate-based authentication is enabled for IKE, allows remote attackers to cause a denial of service (Phase 1 SA exhaustion) via crafted requests, aka Bug IDs CSCsy07555 and CSCee72997.
22 CVE-2009-2869 DoS 2009-09-28 2017-09-19
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.2XNA, 12.2XNB, 12.2XNC, 12.2XND, 12.4MD, 12.4T, 12.4XZ, and 12.4YA allows remote attackers to cause a denial of service (device reload) via a crafted NTPv4 packet, aka Bug IDs CSCsu24505 and CSCsv75948.
23 CVE-2009-2870 DoS 2009-09-28 2009-10-01
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.2 through 12.4, when the Cisco Unified Border Element feature is enabled, allows remote attackers to cause a denial of service (device reload) via crafted SIP messages, aka Bug ID CSCsx25880.
24 CVE-2009-2871 DoS 2009-09-28 2009-10-01
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.2 and 12.4, when SSLVPN sessions, SSH sessions, or IKE encrypted nonces are enabled, allows remote attackers to cause a denial of service (device reload) via a crafted encrypted packet, aka Bug ID CSCsq24002.
25 CVE-2009-5038 20 DoS 2011-01-07 2020-05-13
7.8
None Remote Low Not required None None Complete
Cisco IOS before 15.0(1)XA does not properly handle IRC traffic during a specific time period after an initial reload, which allows remote attackers to cause a denial of service (device reload) via an attempted connection to a certain IRC server, related to a "corrupted magic value," aka Bug ID CSCso05336.
26 CVE-2010-0576 DoS 2010-03-25 2017-08-17
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.0 through 12.4, IOS XE 2.1.x through 2.3.x before 2.3.2, and IOS XR 3.2.x through 3.4.3, when Multiprotocol Label Switching (MPLS) and Label Distribution Protocol (LDP) are enabled, allows remote attackers to cause a denial of service (device reload or process restart) via a crafted LDP packet, aka Bug IDs CSCsz45567 and CSCsj25893.
27 CVE-2010-0579 DoS 2010-03-25 2010-04-13
7.8
None Remote Low Not required None None Complete
The SIP implementation in Cisco IOS 12.3 and 12.4 allows remote attackers to cause a denial of service (device reload) via a malformed SIP message, aka Bug ID CSCtb93416, the "SIP Message Handling Denial of Service Vulnerability."
28 CVE-2010-0582 DoS 2010-03-25 2010-04-13
7.8
None Remote Low Not required None None Complete
Cisco IOS 12.1 through 12.4, and 15.0M before 15.0(1)M1, allows remote attackers to cause a denial of service (interface queue wedge) via malformed H.323 packets, aka Bug ID CSCta19962.
29 CVE-2010-0583 399 DoS 2010-03-25 2017-08-17
7.8
None Remote Low Not required None None Complete
Memory leak in the H.323 implementation in Cisco IOS 12.1 through 12.4, and 15.0M before 15.0(1)M1, allows remote attackers to cause a denial of service (memory consumption and device reload) via malformed H.323 packets, aka Bug ID CSCtb93855.
30 CVE-2010-0584 DoS 2010-03-25 2010-07-13
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.4, when NAT SCCP fragmentation support is enabled, allows remote attackers to cause a denial of service (device reload) via crafted Skinny Client Control Protocol (SCCP) packets, aka Bug ID CSCsy09250.
31 CVE-2010-0585 DoS 2010-03-25 2010-04-01
7.8
None Remote Low Not required None None Complete
Cisco IOS 12.1 through 12.4, when Cisco Unified Communications Manager Express (CME) or Cisco Unified Survivable Remote Site Telephony (SRST) is enabled, allows remote attackers to cause a denial of service (device reload) via a malformed Skinny Client Control Protocol (SCCP) message, aka Bug ID CSCsz48614, the "SCCP Packet Processing Denial of Service Vulnerability."
32 CVE-2010-0586 DoS 2010-03-25 2017-09-19
7.8
None Remote Low Not required None None Complete
Cisco IOS 12.1 through 12.4, when Cisco Unified Communications Manager Express (CME) or Cisco Unified Survivable Remote Site Telephony (SRST) is enabled, allows remote attackers to cause a denial of service (device reload) via a malformed Skinny Client Control Protocol (SCCP) message, aka Bug ID CSCsz49741, the "SCCP Request Handling Denial of Service Vulnerability."
33 CVE-2010-2827 20 DoS 2010-08-16 2010-08-20
7.8
None Remote Low Not required None None Complete
Cisco IOS 15.1(2)T allows remote attackers to cause a denial of service (resource consumption and TCP outage) via spoofed TCP packets, related to embryonic TCP connections that remain in the SYN_RCVD or SYN_SENT state, aka Bug ID CSCti18193.
34 CVE-2010-2828 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in the H.323 implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 2.5.x before 2.5.2 and 2.6.x before 2.6.1, allows remote attackers to cause a denial of service (device reload) via crafted H.323 packets, aka Bug ID CSCtc73759.
35 CVE-2010-2829 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in the H.323 implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 2.5.x before 2.5.2 and 2.6.x before 2.6.1, allows remote attackers to cause a denial of service (traceback and device reload) via crafted H.323 packets, aka Bug ID CSCtd33567.
36 CVE-2010-2831 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in the NAT for SIP implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1 allows remote attackers to cause a denial of service (device reload) via transit traffic on UDP port 5060, aka Bug ID CSCtf17624.
37 CVE-2010-2832 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in the NAT for H.323 implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1 allows remote attackers to cause a denial of service (device reload) via transit traffic, aka Bug ID CSCtf91428.
38 CVE-2010-2833 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in the NAT for H.225.0 implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1 allows remote attackers to cause a denial of service (device reload) via transit traffic, aka Bug ID CSCtd86472.
39 CVE-2010-2834 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
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) 6.x before 6.1(5)SU1, 7.x before 7.1(5), and 8.0 before 8.0(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via crafted SIP registration traffic over UDP, aka Bug IDs CSCtf72678 and CSCtf14987.
40 CVE-2010-2835 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
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) 6.x before 6.1(5), 7.0 before 7.0(2a)su3, 7.1su before 7.1(3b)su2, 7.1 before 7.1(5), and 8.0 before 8.0(1) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a SIP REFER request with an invalid Refer-To header, aka Bug IDs CSCta20040 and CSCta31358.
41 CVE-2010-2836 399 DoS 2010-09-23 2010-09-24
7.8
None Remote Low Not required None None Complete
Memory leak in the SSL VPN feature in Cisco IOS 12.4, 15.0, and 15.1, when HTTP port redirection is enabled, allows remote attackers to cause a denial of service (memory consumption) by improperly disconnecting SSL sessions, leading to connections that remain in the CLOSE-WAIT state, aka Bug ID CSCtg21685.
42 CVE-2010-4671 400 DoS 2011-01-07 2020-05-08
7.8
None Remote Low Not required None None Complete
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS before 15.0(1)XA5 allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, as demonstrated by the flood_router6 program in the thc-ipv6 package, aka Bug ID CSCti33534.
43 CVE-2010-4683 772 DoS 2011-01-07 2020-05-13
7.8
None Remote Low Not required None None Complete
Memory leak in Cisco IOS before 15.0(1)XA5 might allow remote attackers to cause a denial of service (memory consumption) by sending a crafted SIP REGISTER message over UDP, aka Bug ID CSCtg41733.
44 CVE-2010-4686 400 DoS 2011-01-07 2020-05-13
7.8
None Remote Low Not required None None Complete
CallManager Express (CME) on Cisco IOS before 15.0(1)XA1 does not properly handle SIP TRUNK traffic that contains rate bursts and a "peculiar" request size, which allows remote attackers to cause a denial of service (memory consumption) by sending this traffic over a long duration, aka Bug ID CSCtb47950.
45 CVE-2011-0939 DoS 2011-10-03 2012-05-18
7.8
None Remote Low Not required None None Complete
Unspecified vulnerability in Cisco IOS 12.4, 15.0, and 15.1, and IOS XE 2.5.x through 3.2.x, allows remote attackers to cause a denial of service (device reload) via a crafted SIP message, aka Bug ID CSCth03022.
46 CVE-2011-0941 399 DoS 2011-11-01 2012-02-29
7.8
None Remote Low Not required None None Complete
Memory leak in Cisco Unified Communications Manager (CUCM) 6.x before 6.1(5)su2, 7.x before 7.1(5b)su3, 8.x before 8.0(3a)su1, and 8.5 before 8.5(1), and Cisco IOS 12.4 and 15.1, allows remote attackers to cause a denial of service (memory consumption and process failure or device reload) via a malformed SIP message, aka Bug IDs CSCti75128 and CSCtj09179.
47 CVE-2011-0944 399 DoS 2011-10-03 2012-05-18
7.8
None Remote Low Not required None None Complete
Cisco IOS 12.4, 15.0, and 15.1 allows remote attackers to cause a denial of service (device reload) via malformed IPv6 packets, aka Bug ID CSCtj41194.
48 CVE-2011-0945 399 DoS 2011-10-03 2012-05-14
7.8
None Remote Low Not required None None Complete
Memory leak in the Data-link switching (aka DLSw) feature in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xS before 3.1.3S and 3.2.xS before 3.2.1S, when implemented over Fast Sequence Transport (FST), allows remote attackers to cause a denial of service (memory consumption and device reload or hang) via a crafted IP protocol 91 packet, aka Bug ID CSCth69364.
49 CVE-2011-0946 399 DoS 2011-10-03 2012-05-14
7.8
None Remote Low Not required None None Complete
The NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload or hang) via malformed NetMeeting Directory (aka Internet Locator Service or ILS) LDAP traffic, aka Bug ID CSCtd10712.
50 CVE-2011-1624 399 DoS 2011-08-18 2012-03-15
7.8
None Remote Low Not required None None Complete
Cisco IOS 12.2(58)SE, when a login banner is configured, allows remote attackers to cause a denial of service (device reload) by establishing two SSH2 sessions, aka Bug ID CSCto62631.
Total number of vulnerabilities : 239   Page : 1 (This Page)2 3 4 5
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