# CVE-2016-6415: Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability

> CVE-2016-6415: Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability. CVSS 7.5 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2016-6415
Last updated: 2026-01-12T21:16:07Z

- Published: 2016-09-19 01:00 UTC · Updated: 2026-01-12 21:16 UTC · Assigner: cisco
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS: 87.7%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-05-19, federal due date 2023-06-09, ransomware use: Unknown

## Description

The server IKEv1 implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.6, IOS XE through 3.18S, IOS XR 4.3.x and 5.0.x through 5.2.x, and PIX before 7.0 allows remote attackers to obtain sensitive information from device memory via a Security Association (SA) negotiation request, aka Bug IDs CSCvb29204 and CSCvb36055 or BENIGNCERTAIN.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Cisco: IOS, IOS XR, and IOS XE

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2016-6415)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2016-6415)
- [http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1](http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1)
- [http://www.securityfocus.com/bid/93003](http://www.securityfocus.com/bid/93003)
- [http://www.securitytracker.com/id/1036841](http://www.securitytracker.com/id/1036841)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2016-6415 · Markdown: https://rewindex.com/cve/CVE-2016-6415.md · JSON: https://rewindex.com/api/v1/cves/CVE-2016-6415 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:01:56.459Z