No exploitation reported

CVE-2016-6382

Q: Is CVE-2016-6382 actively exploited?

Active exploitation of CVE-2016-6382 has not been confirmed. Its EPSS score was 4.9% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2016-6382?

CVE-2016-6382 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2016-10-05
WeaknessCWE-399

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2016-10-0517:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-6382?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-6382?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco ios

Branch	Affected	Fixed in	Source
15.2	= 15.2\(1\)sy	no fix published	NVD
15.2	= 15.2\(1\)sy0a	no fix published	NVD
15.2	= 15.2\(1\)sy1	no fix published	NVD
15.2	= 15.2\(1\)sy1a	no fix published	NVD
15.2	= 15.2\(2\)e	no fix published	NVD
15.2	= 15.2\(2\)e1	no fix published	NVD
15.2	= 15.2\(2\)e2	no fix published	NVD
15.2	= 15.2\(2\)e4	no fix published	NVD
15.2	= 15.2\(2\)ea1	no fix published	NVD
15.2	= 15.2\(2\)ea2	no fix published	NVD
15.2	= 15.2\(2\)ea3	no fix published	NVD
15.2	= 15.2\(2\)eb	no fix published	NVD

Cisco ios xe

Branch	Affected	Fixed in	Source
3.6	= 3.6.0e	no fix published	NVD
3.6	= 3.6.1e	no fix published	NVD
3.6	= 3.6.2ae	no fix published	NVD
3.6	= 3.6.2e	no fix published	NVD
3.6	= 3.6.3e	no fix published	NVD
3.6	= 3.6.4e	no fix published	NVD
3.7	= 3.7.0e	no fix published	NVD
3.7	= 3.7.1e	no fix published	NVD
3.7	= 3.7.2e	no fix published	NVD
3.7	= 3.7.3e	no fix published	NVD
3.8	= 3.8.0e	no fix published	NVD
3.8	= 3.8.1e	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-16-287-04 CISA5 known affected
Rockwell Automation Stratix Denial-of-Service and Memory Leak Vulnerabilities
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 · +2 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-16-287-04 · 5 productsRockwell Automation encourages users using affected versions of these Stratix products to update to the latest available software versions addressing the associated risk, and including improvements to further harden the software and enhance its resilience against similar malicious attacks. Users ca…
Mitigation from the vendor CISA ICSA-16-287-04 · 5 productsAdditional precautions and risk mitigation strategies specific to these types of attacks are recommended in the Rockwell Automation security release. When possible, multiple strategies should be implemented simultaneously. (https://rockwellautomation.custhelp.com/app/answers/detail/a_id/942592)
Mitigation from the vendor CISA ICSA-16-287-04 · 5 productsPlease also refer to Cisco’s security advisories for additional workarounds and details for these vulnerabilities: (https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados)
Mitigation from the vendor CISA ICSA-16-287-04 · 5 productsPlease also refer to Cisco’s security advisories for additional workarounds and details for these vulnerabilities: (https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-msdp)
Mitigation from the vendor CISA ICSA-16-287-04 · 5 productsPlease also refer to Cisco’s security advisories for additional workarounds and details for these vulnerabilities: (https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-dns)
Mitigation from the vendor CISA ICSA-16-287-04 · 5 productsPlease also refer to Cisco’s security advisories for additional workarounds and details for these vulnerabilities: (https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-smi)

Advisories and patches

tools.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.07.5read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
NVDweakness (CWE)CWE-399read 2026-10-23
FIRST EPSSEPSS score4.9 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2016-10-05
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-6382?

Is CVE-2016-6382 actively exploited?

Active exploitation of CVE-2016-6382 has not been confirmed. Its EPSS score was 4.9% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-6382?

CVE-2016-6382 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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