CVE-2016-6415
Actively exploited. CVE-2016-6415 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-19) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2016-6415 is indexed in Metasploit, Exploit-DB and GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
Cisco IOS, IOS XR, and IOS XE contain insufficient condition checks in the part of the code that handles Internet Key Exchange version 1 (IKEv1) security negotiation requests. contains an information disclosure vulnerability in the Internet Key Exchange version 1 (IKEv1) that could allow an attacker to retrieve memory contents. Successful exploitation could allow the attacker to retrieve memory contents, which can lead to information disclosure.
CSIRTS triage
- What
- There is an information disclosure vulnerability in the Internet Key Exchange version 1 (IKEv1) that could allow an attacker to retrieve memory contents.
- Who is affected
- Deployments of Cisco IOS, IOS XR, and IOS XE are affected.
- Urgency
- Remediation is urgent due to the critical severity and confirmed exploitation.
- Action
- Users should update to the latest version of Cisco IOS, IOS XR, or IOS XE.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2016-6415 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- MetasploitA Metasploit Framework module targets this CVE — weaponized, point-and-click exploitation.look it up ↗
- Exploit-DBA public exploit is published in the Exploit-DB archive.look it up ↗
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2016-6415: Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerabilitycisa-kev · 2023-05-19
External references
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[](https://www.csirts.com/cve/CVE-2016-6415)