CVE Tools
Track your stack

Cisco

6,456 CVEs across 267 months on the top 200 list since Sep 1999. Peak rank #1 in 9 months, last Jul 2017. 97 of them are now in CISA KEV.

Cisco CVEs per month since Sep 1999

Dec 2021 to Nov 2026 in the lens. Point at a month to read it, or drag the frame to move through the record.Tallest in the lens: 104, Nov 2024
Dec 2021: below the top 200 that month, 2 or fewer CVEsJan 2022: 18 CVEs · 1 critical · 0 now in CISA KEV · rank #45 · mostly Security Manager, Cisco Security Manager, Adaptive Security Appliance SoftwareFeb 2022: 25 CVEs · 15 critical · 5 now in CISA KEV · rank #36 · mostly Cisco Small Business RV Series Router Firmware, RV345P Firmware, RV345 FirmwareMar 2022: below the top 200 that month, 3 or fewer CVEsApr 2022: 59 CVEs · 4 critical · 1 now in CISA KEV · rank #12 · mostly Cisco IOS XE, IOS XE, Cisco IOSMay 2022: 48 CVEs · 3 critical · 1 now in CISA KEV · rank #15 · mostly Firepower Threat Defense, Cisco Common Services Platform Collector, Common Services Platform CollectorJun 2022: 11 CVEs · 3 critical · 0 now in CISA KEV · rank #61 · mostly Cisco Email Security Appliance (Esa), Cisco Identity Services Engine Software, Email Security ApplianceJul 2022: 55 CVEs · 5 critical · 0 now in CISA KEV · rank #15 · mostly Cisco Small Business RV Series Router Firmware, RV130 Firmware, RV130W Wireless-N Multifunction VPN RouterAug 2022: 15 CVEs · 3 critical · 0 now in CISA KEV · rank #49 · mostly Cisco Small Business RV Series Router Firmware, Cisco Small Business RV340, Cisco RV345Sep 2022: 21 CVEs · 0 critical · 1 now in CISA KEV · rank #41 · mostly Cisco IOS XE, IOS XE, Catalyst SD-WAN ManagerOct 2022: 15 CVEs · 0 critical · 0 now in CISA KEV · rank #54 · mostly Cisco IOS XE, IOS XE, RoomosNov 2022: 47 CVEs · 0 critical · 0 now in CISA KEV · rank #15 · mostly Cisco Firepower Management Center, Secure Firewall Management Center, Cisco Firepower Threat Defense SoftwareDec 2022: 7 CVEs · 0 critical · 0 now in CISA KEV · rank #80 · mostly Multiplatform Analog Telephone Adapter (Ata) 192, Analog Telephone Adapter (Ata) 191, Ata 190 FirmwareJan 2023: 24 CVEs · 1 critical · 0 now in CISA KEV · rank #39 · mostly Cisco Identity Services Engine, Identity Services Engine, Cisco Small Business RV Series Router FirmwareFeb 2023: 17 CVEs · 1 critical · 0 now in CISA KEV · rank #45 · mostly NX-OS, Ucs 64108 Firmware, Cisco Unified Computing System (Managed)Mar 2023: no snapshot, the run for this month failedApr 2023: 42 CVEs · 0 critical · 1 now in CISA KEV · rank #17 · mostly Cisco Small Business RV Series Router Firmware, RV320 Firmware, Cisco Small Business RV325May 2023: 28 CVEs · 1 critical · 0 now in CISA KEV · rank #27 · mostly Identity Services Engine, Cisco Identity Services Engine Software, Cisco Identity Services EngineJun 2023: 12 CVEs · 2 critical · 0 now in CISA KEV · rank #51 · mostly Asyncos, Secure Email and Web Manager, Secure Email GatewayJul 2023: 6 CVEs · 0 critical · 0 now in CISA KEV · rank #105 · mostly Webex Meetings, Cisco Webex Meetings, Cisco NX-OS System Software In Aci ModeAug 2023: 37 CVEs · 1 critical · 0 now in CISA KEV · rank #23 · mostly Prime Infrastructure, Cisco Evolved Programmable Network Manager, Cisco Prime InfrastructureSep 2023: 31 CVEs · 2 critical · 2 now in CISA KEV · rank #30 · mostly IOS XE, Cisco IOS XE, Cisco IOS XE SoftwareOct 2023: 7 CVEs · 2 critical · 3 now in CISA KEV · rank #101 · mostly IOS XE, Cisco IOS XE, Cisco IOS XE SoftwareNov 2023: 39 CVEs · 1 critical · 0 now in CISA KEV · rank #16 · mostly Firepower Threat Defense, Cisco Firepower Threat Defense Software, Cisco Firepower Management CenterDec 2023: below the top 200 that month, 4 or fewer CVEsJan 2024: 13 CVEs · 2 critical · 0 now in CISA KEV · rank #66 · mostly Cisco Evolved Programmable Network Manager, Prime Infrastructure, Evolved Programmable Network ManagerFeb 2024: 10 CVEs · 2 critical · 0 now in CISA KEV · rank #70 · mostly NX-OS, Cisco NX-OS Software, Cisco ExpresswayMar 2024: 35 CVEs · 0 critical · 0 now in CISA KEV · rank #29 · mostly IOS XE, Cisco IOS XE Software, Cisco IOS XRApr 2024: 22 CVEs · 0 critical · 2 now in CISA KEV · rank #43 · mostly Nexus Dashboard, Adaptive Security Appliance, Adaptive Security Appliance SoftwareMay 2024: 21 CVEs · 0 critical · 0 now in CISA KEV · rank #54 · mostly Cisco Firepower Threat Defense Software, Asyncos, Cisco Network Services OrchestratorJun 2024: below the top 200 that month, 4 or fewer CVEsJul 2024: 12 CVEs · 2 critical · 1 now in CISA KEV · rank #60 · mostly Cisco Webex Teams, Asyncos, Cisco Secure EmailAug 2024: 21 CVEs · 3 critical · 0 now in CISA KEV · rank #39 · mostly NX-OS, Cisco NX-OS Software, Cisco Small Business SPA300 Series Ip PhonesSep 2024: 32 CVEs · 1 critical · 1 now in CISA KEV · rank #23 · mostly Cisco IOS XE Software, IOS XE, Cisco IOS XR SoftwareOct 2024: 94 CVEs · 4 critical · 1 now in CISA KEV · rank #11 · mostly Cisco Firepower Threat Defense Software, Secure Firewall Management Center, Firepower Threat DefenseNov 2024: 104 CVEs · 3 critical · 0 now in CISA KEV · rank #10 · mostly Cisco Catalyst SD-WAN Manager, Cisco SD-WAN, Catalyst SD-WAN ManagerDec 2024: below the top 200 that month, 3 or fewer CVEsJan 2025: 8 CVEs · 1 critical · 0 now in CISA KEV · rank #101 · mostly Crosswork Network Controller, Cisco Common Services Platform Collector Software, Common Services Platform CollectorFeb 2025: 30 CVEs · 2 critical · 0 now in CISA KEV · rank #23 · mostly Cisco IOS XE, IOS XE, IOSMar 2025: 14 CVEs · 0 critical · 0 now in CISA KEV · rank #65 · mostly Cisco IOS XR, IOS XR, Cisco IOS XR SoftwareApr 2025: 8 CVEs · 1 critical · 1 now in CISA KEV · rank #96 · mostly Cisco Evolved Programmable Network Manager (Epnm), Cisco Evolved Programmable Network Manager, Evolved Programmable Network ManagerMay 2025: 48 CVEs · 1 critical · 0 now in CISA KEV · rank #20 · mostly Cisco IOS XE Software, IOS XE, Cisco IOS XEJun 2025: 18 CVEs · 4 critical · 1 now in CISA KEV · rank #50 · mostly Cisco Unified Contact Center Express, Unified Contact Center Express, Cisco Identity Services Engine SoftwareJul 2025: 11 CVEs · 2 critical · 1 now in CISA KEV · rank #81 · mostly Identity Services Engine Passive Identity Connector (Ise-pic), Cisco Identity Services Engine, Cisco Identity Services Engine SoftwareAug 2025: 48 CVEs · 1 critical · 0 now in CISA KEV · rank #22 · mostly Cisco Firepower Threat Defense Software, Cisco Adaptive Security Appliance (ASA) Software, Firepower Threat DefenseSep 2025: 32 CVEs · 2 critical · 3 now in CISA KEV · rank #32 · mostly Cisco IOS XE Software, Cisco IOS XE, IOSOct 2025: 8 CVEs · 0 critical · 0 now in CISA KEV · rank #121 · mostly Cisco Cyber Vision, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco Session Initiation Protocol (Sip) SoftwareNov 2025: 17 CVEs · 2 critical · 0 now in CISA KEV · rank #50 · mostly Cisco Unified Contact Center Express, Cisco Catalyst Center, Cisco Digital Network Architecture Center (Dna Center)Dec 2025: below the top 200 that month, 5 or fewer CVEsJan 2026: 11 CVEs · 0 critical · 1 now in CISA KEV · rank #85 · mostly Cisco Identity Services Engine Software, Cisco Identity Services Engine, Cisco Secure Firewall Threat Defense (FTD)Feb 2026: 22 CVEs · 2 critical · 4 now in CISA KEV · rank #48 · mostly Catalyst SD-WAN Manager, Cisco Catalyst SD-WAN Manager, Cisco Unified Computing System (Managed)Mar 2026: 70 CVEs · 2 critical · 1 now in CISA KEV · rank #17 · mostly Cisco Secure Firewall Threat Defense (FTD) Software, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Adaptive Security Appliance SoftwareApr 2026: 32 CVEs · 6 critical · 0 now in CISA KEV · rank #30 · mostly Cisco Unified Computing System (Standalone), Integrated Management Controller, Enterprise Nfv Infrastructure SoftwareMay 2026: 20 CVEs · 2 critical · 1 now in CISA KEV · rank #56 · mostly Catalyst SD-WAN Manager, Cisco Catalyst SD-WAN Manager, IoT Field Network DirectorJun 2026: 10 CVEs · 1 critical · 3 now in CISA KEV · rank #127 · mostly Cisco Identity Services Engine Software, Identity Services Engine, Identity Services Engine Passive Identity ConnectorJul 2026: 20 CVEs · 0 critical · 1 now in CISA KEV · rank #55 · mostly Secure Endpoint, Cisco Secure Endpoint, Cisco Roomos SoftwareAug 2026: 48 CVEs · 13 critical · 1 now in CISA KEV · rank #25 · mostly Cisco IOS XE Software, Cisco Secure Endpoint, IOS XESep 2026: 98 CVEs · 33 critical · 3 now in CISA KEV · rank #16 · mostly Cisco Identity Services Engine Software, Cisco ISE Passive Identity Connector, Identity Services EngineOct 2026: 72 CVEs · 22 critical · 2 now in CISA KEV · rank #19 · mostly Cisco Secure Firewall Threat Defense (FTD) Software, Cisco NX-OS Software, Cisco Open Source Snort3Nov 2026: none that month (the list had room for every one)

In the lens

The products that kept showing up in Cisco's monthly top three from Dec 2021 to Nov 2026. Move the lens and the list follows.

  1. IOS XE10410 months
  2. Cisco Firepower Threat Defense Software825 months
  3. Cisco IOS XE Software807 months
  4. Cisco Small Business RV Series Router Firmware775 months
  5. Cisco IOS XE728 months
  6. Firepower Threat Defense714 months
  7. Cisco Identity Services Engine Software697 months
  8. Cisco Secure Firewall Threat Defense (FTD) Software553 months
  9. Secure Firewall Management Center462 months
  10. Identity Services Engine384 months

Year by year

Each year's months on the top 200 list. Pick a year to read it in the lens.

The record

Peak rank
#1 in 9 months, last Jul 2017
Busiest month
Jan 2021, 156 CVEs
Months with a KEV entry
44 of 267 on the list
On the top 200 list
267 of 308 monthly snapshots

Each monthly snapshot keeps the top 200 vendors by CVEs. A month below the cut shows the most it could have had: the smallest count that made the list. 19 months have no snapshot because the run failed.

MethodologyAll months on recordThe Cisco hub