CVE-2019-6684
No exploitation reported by the sources we read.
- Published2019-12-23
- Fixed in15.1.0 · 14.1.2.3 · 13.1.3.2
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
On versions 15.0.0-15.0.1.1, 14.0.0-14.1.2.2, 13.1.0-13.1.3.1, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, under certain conditions, a multi-bladed BIG-IP Virtual Clustered Multiprocessing (vCMP) may drop broadcast packets when they are rebroadcast to the vCMP guest secondary blades. An attacker can leverage the fragmented broadcast IP packets to perform any type of fragmentation-based attack.
Timeline
dates in UTC- 2019-12-2318:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-6684?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-6684?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 |
|---|---|---|---|
| 15.x | ≥ 15.0.0, < 15.1.0 | 15.1.0 | NVD |
| 14.x | ≥ 14.0.0, < 14.1.2.3 | 14.1.2.3 | NVD |
| 13.x | ≥ 13.0.0, < 13.1.3.2 | 13.1.3.2 | NVD |
| 11.x | ≥ 11.5.2, ≤ 11.6.5 | no fix published | NVD |
| 12.1 | ≥ 12.1.0, ≤ 12.1.5 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.x | ≥ 15.0.0, < 15.1.0 | 15.1.0 | NVD |
| 14.x | ≥ 14.0.0, < 14.1.2.3 | 14.1.2.3 | NVD |
| 13.x | ≥ 13.0.0, < 13.1.3.2 | 13.1.3.2 | NVD |
| 11.x | ≥ 11.5.2, ≤ 11.6.5 | no fix published | NVD |
| 12.1 | ≥ 12.1.0, ≤ 12.1.5 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.x | ≥ 15.0.0, < 15.1.0 | 15.1.0 | NVD |
| 14.x | ≥ 14.0.0, < 14.1.2.3 | 14.1.2.3 | NVD |
| 13.x | ≥ 13.0.0, < 13.1.3.2 | 13.1.3.2 | NVD |
| 11.x | ≥ 11.5.2, ≤ 11.6.5 | no fix published | NVD |
| 12.1 | ≥ 12.1.0, ≤ 12.1.5 | no fix published | NVD |
8 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
- Update F5 big-ip access policy manager to 15.1.0 · 14.1.2.3 · 13.1.3.2
Advisories and patches
- support.f5.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 3.17.5read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- FIRST EPSSEPSS score1.0 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2019-12-23
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-6684?
Is CVE-2019-6684 actively exploited?
What is the CVSS score for CVE-2019-6684?
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