CVE-2016-6415 (GCVE-0-2016-6415)

Vulnerability from cvelistv5 – Published: 2016-09-19 01:00 – Updated: 2026-01-12 21:16
VLAI CISA Previdian
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: active Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-08 17:38 UTC
CWE
  • n/a
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 431 records in the last 180 days details
References
URL Tags
http://www.securitytracker.com/id/1036841 vdb-entryx_refsource_SECTRACK
http://tools.cisco.com/security/center/content/Ci… vendor-advisoryx_refsource_CISCO
http://www.securityfocus.com/bid/93003 vdb-entryx_refsource_BID
https://www.cisa.gov/known-exploited-vulnerabilit… government-resource
Date Public
2016-09-16 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 234c8d93-b8a1-4fc0-927e-eb855390074a

Vulnerability ID: CVE-2016-6415

Status: Confirmed

Status Updated: 2023-05-19 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-05-19
Asserted: 2023-05-19
Scope
Notes: Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability | Affected: Cisco / IOS, IOS XR, and IOS XE | Description: 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. | Required action: Apply updates per vendor instructions. | Due date: 2023-06-09 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1; https://nvd.nist.gov/vuln/detail/CVE-2016-6415
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-200
Feed CISA Known Exploited Vulnerabilities Catalog
Product IOS, IOS XR, and IOS XE
Due Date 2023-06-09
Date Added 2023-05-19
Vendorproject Cisco
Vulnerabilityname Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:26 UTC | Updated: 2026-11-04 13:33 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 76fc0eaf-5f0e-4a6d-b81e-30f1a65b34d4

Vulnerability ID: CVE-2016-6415

Status: Confirmed

Status Updated: 2023-05-19 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-05-19
Asserted: 2023-05-19
Scope
Notes: KEVIntel entry: 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,... | Affected: Cisco / IOS, IOS XE, IOS XR, PIX | CVSS: 7.5 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title 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,...
Vendor Cisco
Product IOS, IOS XE, IOS XR, PIX
Added Date 2023-05-19T00:00:00.000Z
Cvss Score 7.5
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:05 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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