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CVE-2017-12237

Quick assessment

Affected

n/a Cisco IOS and IOS XE

Exploitation

Confirmed exploitation in the wild; remediate immediately

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS和IOS XE都是美国思科（Cisco）公司为其网络设备开发的操作系统。Internet Key Exchange Version 2 (IKEv2) module是其中的一个密钥交换协议模块。 Cisco IOS 15.0版本至15.6版本和IOS XE 3.5版本至16.5版本中的IKEv2模块存在资源管理错误漏洞。远程攻击者可通过向受影响的设备发送特定的IKEv2数据包利用该漏洞造成拒绝服务（CPU大量消耗和设备重新加载）。

AI Predicted 7.5 Difficulty: Trivial KEV EPSS 7.07% · P94 Updated Jan 13, 2026

In-the-Wild Activity Observed cisa_kev · confirmed

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

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I. Basic Information for CVE-2017-12237

Vulnerability Information

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Vulnerability Title

N/A

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS 15.0 through 15.6 and Cisco IOS XE 3.5 through 16.5 could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to how an affected device processes certain IKEv2 packets. An attacker could exploit this vulnerability by sending specific IKEv2 packets to an affected device to be processed. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. This vulnerability affects Cisco devices that have the Internet Security Association and Key Management Protocol (ISAKMP) enabled. Although only IKEv2 packets can be used to trigger this vulnerability, devices that are running Cisco IOS Software or Cisco IOS XE Software are vulnerable when ISAKMP is enabled. A device does not need to be configured with any IKEv2-specific features to be vulnerable. Many features use IKEv2, including different types of VPNs such as the following: LAN-to-LAN VPN; Remote-access VPN, excluding SSL VPN; Dynamic Multipoint VPN (DMVPN); and FlexVPN. Cisco Bug IDs: CSCvc41277.

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

资源管理错误

Source: CVE Program / CVE List V5

Vulnerability Title

Cisco IOS和IOS XE Internet Key Exchange模块资源管理错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
-	Cisco IOS and IOS XE	Cisco IOS and IOS XE	-

II. Public POCs for CVE-2017-12237

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2017-12237

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Vendor Advisories for CVE-2017-12237 (3)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-ike x_refsource_CONFIRM
http://www.securityfocus.com/bid/101037 vdb-entry x_refsource_BID
http://www.securitytracker.com/id/1039460 vdb-entry x_refsource_SECTRACK

https://www.cve.org/CVERecord?id=CVE-2017-12237

Same Patch Batch · n/a · 2017-09-28 · 35 CVEs total

CVE-2017-14861		Exiv2 资源管理错误漏洞
CVE-2017-12235		Cisco IOS 输入验证漏洞
CVE-2017-12236		Cisco IOS XE 授权问题漏洞
CVE-2017-12238		Cisco Catalyst 6800 Series Switches 资源管理错误漏洞
CVE-2017-12239		Cisco ASR 1000 Series Aggregation Services Routers和Cisco cBR-8 Converged Broadband Routers
CVE-2017-12240		Cisco IOS和IOS XE Software DHCP relay子系统缓冲区错误漏洞
CVE-2017-14857		Exiv2 安全漏洞
CVE-2017-14858		Exiv2 缓冲区错误漏洞
CVE-2017-14860		Exiv2 缓冲区错误漏洞
CVE-2017-12234		Cisco IOS 输入验证漏洞
CVE-2017-14863		Exiv2 缓冲区错误漏洞
CVE-2017-14865		Exiv2 缓冲区错误漏洞
CVE-2017-14866		Exiv2 缓冲区错误漏洞
CVE-2017-14849		Joyent Node.js 安全漏洞
CVE-2017-14859		Exiv2 缓冲区错误漏洞
CVE-2017-14862		Exiv2 缓冲区错误漏洞
CVE-2017-14864		Exiv2 缓冲区错误漏洞
CVE-2017-12222		Cisco Catalyst 3650和3850交换机IOS XE Software 资源管理错误漏洞
CVE-2017-7553		App Studio 代码问题漏洞
CVE-2017-7554		RHMAP App Studio组件安全漏洞

Showing top 20 of 35 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco IOS and IOS XE

Same vendor: n/a

Same weakness: CWE-399