No exploitation reported

CVE-2016-5023

No exploitation reported by the sources we read.

Published2016-08-26
WeaknessCWE-284

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

Virtual servers in F5 BIG-IP systems 11.2.1 HF11 through HF15, 11.4.1 HF4 through HF10, 11.5.3 through 11.5.4, 11.6.0 HF5 through HF7, and 12.0.0, when configured with a TCP profile, allow remote attackers to cause a denial of service (Traffic Management Microkernel restart) via crafted network traffic.

Timeline

dates in UTC

2016-08-2614:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2016-5023?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-5023?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

F5 big-ip access policy manager

Branch	Affected	Fixed in	Source
11.2	= 11.2.1	no fix published	NVD
11.4	= 11.4.1	no fix published	NVD
11.5	= 11.5.3	no fix published	NVD
11.5	= 11.5.4	no fix published	NVD
11.6	= 11.6.0	no fix published	NVD
12.0	= 12.0.0	no fix published	NVD

F5 big-ip analytics

Branch	Affected	Fixed in	Source
12.0	= 12.0.0	no fix published	NVD
11.2	= 11.2.1	no fix published	NVD
11.4	= 11.4.1	no fix published	NVD
11.5	= 11.5.3	no fix published	NVD
11.5	= 11.5.4	no fix published	NVD
11.6	= 11.6.0	no fix published	NVD

F5 big-ip application security manager

Branch	Affected	Fixed in	Source
11.2	= 11.2.1	no fix published	NVD
11.4	= 11.4.1	no fix published	NVD
11.5	= 11.5.3	no fix published	NVD
11.5	= 11.5.4	no fix published	NVD
11.6	= 11.6.0	no fix published	NVD
12.0	= 12.0.0	no fix published	NVD

10 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

support.f5.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 2.05read 2026-10-23
NVDweakness (CWE)CWE-284read 2026-10-23
FIRST EPSSEPSS score3.0 %2026-10-22

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: 2016-08-26
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-5023?

Is CVE-2016-5023 actively exploited?

Active exploitation of CVE-2016-5023 has not been confirmed. Its EPSS score was 3.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-5023?

CVE-2016-5023 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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