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CVE-2016-5023

26
FAUCET Score

CVE-2016-5023 describes a denial-of-service vulnerability affecting specific versions of F5 BIG-IP systems (11.2.1 HF11-HF15, 11.4.1 HF4-HF10, 11.5.3-11.5.4, 11.6.0 HF5-HF7, and 12.0.0) when configured with a TCP profile. Remote attackers can trigger a Traffic Management Microkernel restart by sending crafted network traffic. This vulnerability has a CVSSv3 score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
11.2.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_edge_gateway:11.2.1:*:*:*:*:*:*:*
11.2.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_protocol_security_module:11.2.1:*:*:*:*:*:*:*
11.4.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_protocol_security_module:11.4.1:*:*:*:*:*:*:*
11.2.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_analytics:11.2.1:*:*:*:*:*:*:*
11.4.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_analytics:11.4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.05%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0305 is in the 75th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.f5.com / kb/en-us/solutions/public/k/19/sol19784568.html
Vendor Advisory
securityfocus.com / bid/92670
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036624
Third Party AdvisoryVDB Entry