No exploitation reported

CVE-2016-6392

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 12.2 and 15.0 through 15.3 and IOS XE 3.1 through 3.9 allow remote attackers to cause a denial of service (device restart) via a crafted IPv4 Multicast Source Discovery Protocol (MSDP) Source-Active (SA) message, aka Bug ID CSCud36767.

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-2016-6392?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-6392?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
12.2	= 12.2\(33\)cx	no fix published	NVD
12.2	= 12.2\(33\)cy	no fix published	NVD
12.2	= 12.2\(33\)cy1	no fix published	NVD
12.2	= 12.2\(33\)ira	no fix published	NVD
12.2	= 12.2\(33\)irb	no fix published	NVD
12.2	= 12.2\(33\)irc	no fix published	NVD
12.2	= 12.2\(33\)ird	no fix published	NVD
12.2	= 12.2\(33\)ire	no fix published	NVD
12.2	= 12.2\(33\)ire1	no fix published	NVD
12.2	= 12.2\(33\)ire2	no fix published	NVD
12.2	= 12.2\(33\)irf	no fix published	NVD
12.2	= 12.2\(33\)irg	no fix published	NVD

Cisco ios xe

Branch	Affected	Fixed in	Source
3.1	= 3.1.0s	no fix published	NVD
3.1	= 3.1.1s	no fix published	NVD
3.1	= 3.1.2s	no fix published	NVD
3.1	= 3.1.3as	no fix published	NVD
3.1	= 3.1.4as	no fix published	NVD
3.1	= 3.1.4s	no fix published	NVD
3.2	= 3.2.0ja	no fix published	NVD
3.2	= 3.2.0se	no fix published	NVD
3.2	= 3.2.1s	no fix published	NVD
3.2	= 3.2.1se	no fix published	NVD
3.2	= 3.2.2s	no fix published	NVD
3.2	= 3.2.2se	no fix published	NVD

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

Fix

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 score2.6 %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-2016-6392?

Is CVE-2016-6392 actively exploited?

Active exploitation of CVE-2016-6392 has not been confirmed. Its EPSS score was 2.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-6392?

CVE-2016-6392 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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