Cisco IOS 15.2 through 15.6 and IOS XE 3.6 through 3.17 and 16.1 allow remote attackers to cause a denial of service (device restart) via a…

published 2016-10-05 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7305

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.9%; EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

Cisco IOS 15.2 through 15.6 and IOS XE 3.6 through 3.17 and 16.1 allow remote attackers to cause a denial of service (device restart) via a malformed IPv6 Protocol Independent Multicast (PIM) register packet, aka Bug ID CSCuy16399.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-287-04 updated 2025-06-05 cvss 8.6

Rockwell Automation Stratix Denial-of-Service and Memory Leak Vulnerabilities

Rockwell Automation Allen-Bradley ArmorStratix 5700 Industrial Managed Ethernet Switches <=15.24EA3 Rockwell Automation Allen-Bradley Stratix 5400 Industrial Ethernet Switches <=15.24EA3 Rockwell Automation Allen-Bradley Stratix 5410 Industrial Distribution Switches <=15.24EA3 Rockwell Automation Allen-Bradley Stratix 5700 Industrial Managed Ethernet Switches <=15.24EA3 Rockwell Automation Allen-Bradley Stratix 8000 Modular Managed Ethernet Switches <=15.24EA3
affected: mitigation rockwellautomation.custhelp.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

4.90% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	7.8	AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness

CWE-399 Resource Management Errors

Technology feeds

Cisco IOS rss critical rss

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-msdp
vendor-advisory
securitytracker.com /id/1036914
vdb-entry
ics-cert.us-cert.gov /advisories/ICSA-16-287-04
third-party-advisory, us-government-resource
securityfocus.com /bid/93211
vdb-entry, third-party-advisory

Sources

CVE List CVE-2016-6382
NVD CVE-2016-6382

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary