CVE-2016-6386
No exploitation reported by the sources we read.
- Published2016-10-05
- WeaknessCWE-399
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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 XE 3.1 through 3.17 and 16.1 on 64-bit platforms allows remote attackers to cause a denial of service (data-structure corruption and device reload) via fragmented IPv4 packets, aka Bug ID CSCux66005.
Timeline
dates in UTC- 2016-10-0517:59CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-6386?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-6386?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.1 | = 3.1.0s | no fix published | NVD |
| 3.1 | = 3.1.0sg | no fix published | NVD |
| 3.1 | = 3.1.1s | no fix published | NVD |
| 3.1 | = 3.1.1sg | 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 | = 3.2.0se | 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 |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.4 | = 3.4.0sg | no fix published | NVD |
| 3.4 | = 3.4.1sg | no fix published | NVD |
| 3.4 | = 3.4.2sg | no fix published | NVD |
| 3.4 | = 3.4.3sg | no fix published | NVD |
| 3.4 | = 3.4.4sg | no fix published | NVD |
| 3.4 | = 3.4.5sg | no fix published | NVD |
| 3.4 | = 3.4.6sg | no fix published | NVD |
| 3.4 | = 3.4.7sg | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.3 | = 3.3.0sg | no fix published | NVD |
| 3.3 | = 3.3.1sg | no fix published | NVD |
| 3.3 | = 3.3.2sg | no fix published | NVD |
3 more products in the sources.
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 ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.07.5read 2026-10-23
- NVDCVSS 2.07.8read 2026-10-23
- NVDweakness (CWE)CWE-399read 2026-10-23
- FIRST EPSSEPSS score2.9 %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-2016-6386?
Is CVE-2016-6386 actively exploited?
What is the CVSS score for CVE-2016-6386?
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