CVE Tools
Sign in

CVE-2016-5736

Published: Aug 19, 2016Updated: May 6, 2026 Sources: CVE List NVDCWE-284
7.5HIGH
NVD MITRE
EPSS Score
2.3%
Top 18.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

The default configuration of the IPsec IKE peer listener in F5 BIG-IP LTM, Analytics, APM, ASM, and Link Controller 11.2.1 before HF16, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.x before 12.0.0 HF2; BIG-IP AAM, AFM, and PEM 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.x before 12.0.0 HF2; BIG-IP DNS 12.x before 12.0.0 HF2; BIG-IP Edge Gateway, WebAccelerator, and WOM 11.2.1 before HF16; BIG-IP GTM 11.2.1 before HF16, 11.4.x, 11.5.x before 11.5.4 HF2, and 11.6.x before 11.6.1; and BIG-IP PSM 11.4.0 through 11.4.1 improperly enables the anonymous IPsec IKE peer configuration object, which allows remote attackers to establish an IKE Phase 1 negotiation and possibly conduct brute-force attacks against Phase 2 negotiations via unspecified vectors.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-284

Affected Products

f5
commercial·US
big-ip application acceleration managerOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy
big-ip webacceleratorOn-premNetwork Device
Networking Infrastructure / vpn-gateway
big-ip analyticsOn-premNetwork Device
Networking Infrastructure / network-management
big-ip domain name systemOn-prem
Networking Infrastructure / dns-dhcp-ntp
big-ip edge gatewayOn-premNetwork Device
Networking Infrastructure / vpn-gateway
big-ip access policy managerOn-premNetwork Device
Networking Infrastructure / firewall
big-ip local traffic managerOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy
big-ip advanced firewall managerOn-premSecurity Product
Networking Infrastructure / firewall
and 8 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2016-5736?We can run the check for you — a free external exposure review, no install. Check my exposure

References

http://www.securitytracker.com/id/1036618
securitytracker.com
https://support.f5.com/kb/en-us/solutions/public/k/10/sol10133477.html
support.f5.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2016-5736 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows