Cisco IOS and IOS XE
YES - ON THE CISA KEV LIST
CVE-2017-3881
Cisco IOS and IOS XE Remote Code Execution Vulnerability
overdue since 2022-04-15
Cisco: 103 entries (5.8% of all KEV entries are from this vendor); 21 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2017-3881
References
Other KEV entries for this vendor: Cisco
- CVE-2026-20320 - BroadWorks (2026-11-10)
- CVE-2026-76418 - Secure Firewall ASA Software and Cisco Secure FTD Software (2026-10-29)
- CVE-2026-76519 - Secure Email Gateway (2026-10-14)
- CVE-2026-76504 - Catalyst SD-WAN Manager (2026-09-30)
- CVE-2026-76460 - Identity Services Engine (2026-09-16)
- CVE-2026-76461 - Secure Email Gateway (2026-09-14)
- CVE-2026-20079 - Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management (2026-09-09)
- CVE-2026-20349 - Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) (2026-08-11)
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