What’s Vulnerable › Vulnerabilities

CVE-2016-6423

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-10-05 · updated 2026-06-17
• Weakness: CWE-399

Description

The IKEv2 client and initiator implementations in Cisco IOS 15.5(3)M and IOS XE allow remote IKEv2 servers to cause a denial of service (device reload) via crafted IKEv2 packets, aka Bug ID CSCux97540.

Affected products

• Cisco IOS: 15.5(3)m

References

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-ios-ikev
• http://www.securityfocus.com/bid/93411
• http://www.securitytracker.com/id/1036955
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-ios-ikev
• http://www.securityfocus.com/bid/93411
• http://www.securitytracker.com/id/1036955

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