Cisco IOS and IOS XE Software

YES - ON THE CISA KEV LIST
CVE-2017-6742

Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability

CISA catalog due date2023-05-10
overdue since 2023-05-10

EPSS exploit probability (next 30 days)21.3% · 98percentile

From CVE publication to KEV listing2102 days (2017-07-17 → 2023-04-19)

Remediation window (KEV listing to due date)21 days

Days on the KEV list1302 days

Date added to KEV2023-04-19

Known ransomware campaign useUnknown

VendorCisco

ProductIOS and IOS XE Software

Weaknesses (CWE)CWE-119

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.

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Description

The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload.

Required action (CISA)

Apply updates per vendor instructions.

Notes

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp; https://nvd.nist.gov/vuln/detail/CVE-2017-6742

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)

Cisco - Vendors with KEV entries

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YES - ON THE CISA KEV LISTCVE-2017-6742