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Vendor: Cisco • 618 CVEs

CVEs (618)

CVE
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CVSS
1Cisco
1Ios
May 6, 2026
Mar 27, 2014
N/A· v4
N/A· v3
7.1 HIGH· v2
Cisco IOS 12.2 and 15.0 through 15.3, when used with the Kailash FPGA before 2.6 on RSP720-3C-10GE and RSP720-3CXL-10GE devices, allows remote attackers to cause a denial of service (route switch processor outage) via cr...Show more
Cisco IOS 12.2 and 15.0 through 15.3, when used with the Kailash FPGA before 2.6 on RSP720-3C-10GE and RSP720-3CXL-10GE devices, allows remote attackers to cause a denial of service (route switch processor outage) via crafted IP packets, aka Bug ID CSCug84789.Show less
1Cisco
2Ios
Ios Xe
May 6, 2026
Mar 27, 2014
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS 15.3M before 15.3(3)M2 and IOS XE 3.10.xS before 3.10.2S allow remote attackers to cause a denial of service (device reload) via crafted SIP messages, aka Bug ID CSCug45898.
1Cisco
2Catalyst 6500
Ios
May 6, 2026
Mar 21, 2014
N/A· v4
N/A· v3
7.1 HIGH· v2
Cisco IOS 15.1(2)SY3 and earlier, when used with Supervisor Engine 2T (aka Sup2T) on Catalyst 6500 devices, allows remote attackers to cause a denial of service (device crash) via crafted multicast packets, aka Bug ID CS...Show more
Cisco IOS 15.1(2)SY3 and earlier, when used with Supervisor Engine 2T (aka Sup2T) on Catalyst 6500 devices, allows remote attackers to cause a denial of service (device crash) via crafted multicast packets, aka Bug ID CSCuf60783.Show less
1Cisco
2Ios
Ios Xe
Apr 29, 2026
Dec 3, 2013
N/A· v4
N/A· v3
6.1 MEDIUM· v2
The IP Device Tracking (IPDT) feature in Cisco IOS and IOS XE allows remote attackers to cause a denial of service (IPDT AVL corruption and device reload) via a crafted sequence of ARP packets, aka Bug ID CSCuh38133.
1Cisco
1Ios
Apr 29, 2026
Nov 22, 2013
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.
1Cisco
27600 Router
Ios
Apr 29, 2026
Nov 22, 2013
N/A· v4
N/A· v3
5.4 MEDIUM· v2
The MLDP implementation in Cisco IOS 15.3(3)S and earlier on 7600 routers, when many VRFs are configured, allows remote attackers to cause a denial of service (chunk corruption and device reload) by establishing many mul...Show more
The MLDP implementation in Cisco IOS 15.3(3)S and earlier on 7600 routers, when many VRFs are configured, allows remote attackers to cause a denial of service (chunk corruption and device reload) by establishing many multicast flows, aka Bug ID CSCue22345.Show less
1Cisco
1Ios
Apr 29, 2026
Nov 18, 2013
N/A· v4
N/A· v3
6.8 MEDIUM· v2
The SSL VPN implementation in Cisco IOS 15.3(1)T2 and earlier allows remote authenticated users to cause a denial of service (interface queue wedge) via crafted DTLS packets in an SSL session, aka Bug IDs CSCuh97409 and...Show more
The SSL VPN implementation in Cisco IOS 15.3(1)T2 and earlier allows remote authenticated users to cause a denial of service (interface queue wedge) via crafted DTLS packets in an SSL session, aka Bug IDs CSCuh97409 and CSCud90568.Show less
1Cisco
2Content Services Gateway
Ios
Apr 29, 2026
Nov 13, 2013
N/A· v4
N/A· v3
6.4 MEDIUM· v2
Cisco IOS 12.4(24)MDB9 and earlier on Content Services Gateway (CSG) devices does not properly implement the "parse error drop" feature, which allows remote attackers to bypass intended access restrictions via a crafted...Show more
Cisco IOS 12.4(24)MDB9 and earlier on Content Services Gateway (CSG) devices does not properly implement the "parse error drop" feature, which allows remote attackers to bypass intended access restrictions via a crafted series of packets, aka Bug ID CSCug90143.Show less
1Cisco
1Ios
Apr 29, 2026
Nov 8, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
Multiple memory leaks in Cisco IOS 15.1 before 15.1(4)M7 allow remote attackers to cause a denial of service (memory consumption or device reload) by sending a crafted SIP message over (1) IPv4 or (2) IPv6, aka Bug IDs C...Show more
Multiple memory leaks in Cisco IOS 15.1 before 15.1(4)M7 allow remote attackers to cause a denial of service (memory consumption or device reload) by sending a crafted SIP message over (1) IPv4 or (2) IPv6, aka Bug IDs CSCuc42558 and CSCug25383.Show less
1Cisco
1Ios
Apr 29, 2026
Nov 1, 2013
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The IKEv2 implementation in Cisco IOS, when AES-GCM or AES-GMAC is used, allows remote attackers to bypass certain IPsec anti-replay features via IPsec tunnel traffic, aka Bug ID CSCuj47795.
1Cisco
2Catalyst 3750 X
Ios
Apr 29, 2026
Oct 25, 2013
N/A· v4
N/A· v3
6.8 MEDIUM· v2
Cisco IOS on Catalyst 3750X switches has default Service Module credentials, which makes it easier for local users to gain privileges via a Service Module login, aka Bug ID CSCue92286.
1Cisco
2Ios
Ios Xe
Apr 29, 2026
Oct 10, 2013
N/A· v4
N/A· v3
5.7 MEDIUM· v2
The OSPF functionality in Cisco IOS and IOS XE allows remote attackers to cause a denial of service (device reload) via crafted options in an LSA type 11 packet, aka Bug ID CSCui21030.
1Cisco
1Ios
Apr 29, 2026
Oct 10, 2013
N/A· v4
N/A· v3
5.7 MEDIUM· v2
The remember feature in the DHCP server in Cisco IOS allows remote attackers to cause a denial of service (device reload) by acquiring a lease and then sending a DHCPRELEASE message, aka Bug ID CSCuh46822.
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.1 HIGH· v2
The PPTP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via crafted TCP port-1723 packets, aka Bug ID CSCtq14817.
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCuf28733.
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730.
1Cisco
2Ios
Ios Xe
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS 15.0 through 15.3 and IOS XE 3.2 through 3.8, when a VRF interface exists, allows remote attackers to cause a denial of service (interface queue wedge) via crafted UDP RSVP packets, aka Bug ID CSCuf17023.
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The T1/E1 driver-queue functionality in Cisco IOS 12.2 and 15.0 through 15.3, when an HDLC32 driver is used, allows remote attackers to cause a denial of service (interface queue wedge) via bursty network traffic, aka Bu...Show more
The T1/E1 driver-queue functionality in Cisco IOS 12.2 and 15.0 through 15.3, when an HDLC32 driver is used, allows remote attackers to cause a denial of service (interface queue wedge) via bursty network traffic, aka Bug ID CSCub67465.Show less
1Cisco
1Ios
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv...Show more
The Zone-Based Firewall (ZFW) feature in Cisco IOS 15.1 through 15.2, when content filtering or HTTP ALG inspection is enabled, allows remote attackers to cause a denial of service (device reload or hang) via crafted IPv4 HTTP traffic, aka Bug ID CSCtx56174.Show less
1Cisco
2Ios
Ios Xe
Apr 29, 2026
Sep 27, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
Cisco IOS 12.2 through 12.4 and 15.0 through 15.3, and IOS XE 2.1 through 3.9, allows remote attackers to cause a denial of service (device reload) via crafted DHCP packets that are processed locally by a (1) server or (...Show more
Cisco IOS 12.2 through 12.4 and 15.0 through 15.3, and IOS XE 2.1 through 3.9, allows remote attackers to cause a denial of service (device reload) via crafted DHCP packets that are processed locally by a (1) server or (2) relay agent, aka Bug ID CSCug31561.Show less