CVEvulnerability

CVE-2016-6415

7.5 HIGH Known exploited Published 2016-09-19 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability — Cisco IOS, IOS XR, and IOS XE

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.

Added to KEV
2023-05-19
Remediation due
2023-06-09
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1; https://nvd.nist.gov/vuln/detail/CVE-2016-6415
Status
Analyzed
Published
2016-09-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-200

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.

Affected configurations

• cisco ios (>= 12.2 <= 12.4) • cisco ios (>= 15.0 <= 15.6) • cisco ios xe (<= 3.18s) • cisco ios xr (>= 4.3.0 <= 4.3.4) • cisco ios xr (>= 5.0.0 < 5.3.0)

Related

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

References