Cisco known exploited vulnerabilities
Every Cisco CVE on CISA's Known Exploited Vulnerabilities catalog, newest addition first: 102 in all, 21 added in the last 12 months.
- CVE-2018-0173A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP VersioCisco IOS and IOS XE
- CVE-2018-0172A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticCisco IOS and IOS XE
- CVE-2018-0167Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software,Cisco IOS, IOS XE, and IOS XR
- CVE-2018-0161A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software running on certain models of Cisco CatalystCisco IOS
- CVE-2018-0159A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE SoftwaCisco IOS and IOS XE
- CVE-2018-0158A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unautheCisco IOS and IOS XE
- CVE-2018-0156A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attackerCisco IOS and IOS XE
- CVE-2018-0155A vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation of Cisco Catalyst 4500 Series Switches and Cisco CataCisco IOS and IOS XE
- CVE-2018-0154A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unaCisco IOS
- CVE-2018-0151A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, reCisco IOS and IOS XE
- CVE-2021-1498Cisco HyperFlex HX Command Injection VulnerabilitiesCisco HyperFlex HX Data Platform
- CVE-2021-1497Cisco HyperFlex HX Command Injection VulnerabilitiesCisco HyperFlex HX Data Platform
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Frequently asked questions
How many Cisco vulnerabilities are in CISA KEV?
102 Cisco vulnerabilities are on CISA's Known Exploited Vulnerabilities catalog, 21 of them added in the last 12 months. The newest is CVE-2026-76418 (Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability), added 2026-10-29.
Which Cisco products are in CISA KEV?
44 products, including Secure Firewall ASA Software and Cisco Secure FTD Software, Secure Email Gateway, Catalyst SD-WAN Manager. Attackers have exploited every one of these entries in the wild, and US federal agencies must patch each by its CISA due date.
Are Cisco KEV vulnerabilities used by ransomware?
CISA knows ransomware campaigns exploit 7 of the 102 Cisco entries.