Virtual servers in F5 BIG-IP systems 11.5.0, 11.5.1 before HF11, 11.5.2, 11.5.3, 11.5.4 before HF2, 11.6.0 before HF8, 11.6.1 before HF1, 12
Virtual servers in F5 BIG-IP systems 11.5.0, 11.5.1 before HF11, 11.5.2, 11.5.3, 11.5.4 before HF2, 11.6.0 before HF8, 11.6.1 before HF1, 12.0.0 before HF4, and 12.1.0 before HF2, when configured with the HTTP Explicit Proxy functionality or SOCKS profile, allow remote attackers to modify the system configuration, read system files, and possibly execute arbitrary code via unspecified vectors.
- Published
- Oct 3, 2016
- Updated
- Jun 16, 2026
- EPSS
- 6.4% · 93th percentile
- CWE
- CWE-284
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Report tools
Action score
41
Plan
Add it to your regular patch cycle.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 6.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| f5 | big-ip policy enforcement manager | cpe:2.3:a:f5:big-ip_policy_enforcement_manager |
| f5 | big-ip local traffic manager | cpe:2.3:a:f5:big-ip_local_traffic_manager |
| f5 | big-ip websafe | cpe:2.3:a:f5:big-ip_websafe |
| f5 | big-ip link controller | cpe:2.3:a:f5:big-ip_link_controller |
| f5 | big-ip application acceleration manager | cpe:2.3:a:f5:big-ip_application_acceleration_manager |
| f5 | big-ip access policy manager | cpe:2.3:a:f5:big-ip_access_policy_manager |
| f5 | big-ip advanced firewall manager | cpe:2.3:a:f5:big-ip_advanced_firewall_manager |
| f5 | big-ip application security manager | cpe:2.3:a:f5:big-ip_application_security_manager |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- f5 big-ip access policy manager11.5.0
- f5 big-ip access policy manager11.5.1
- f5 big-ip access policy manager11.5.2
- f5 big-ip access policy manager11.5.3
- f5 big-ip access policy manager11.5.4
- f5 big-ip access policy manager11.6.0
- f5 big-ip access policy manager11.6.1
- f5 big-ip access policy manager12.0.0
- f5 big-ip access policy manager12.1.0
- f5 big-ip advanced firewall manager11.5.0
- f5 big-ip advanced firewall manager11.5.1
- f5 big-ip advanced firewall manager11.5.2
- f5 big-ip advanced firewall manager11.5.3
- f5 big-ip advanced firewall manager11.5.4
- f5 big-ip advanced firewall manager11.6.0
- f5 big-ip advanced firewall manager11.6.1
- f5 big-ip advanced firewall manager12.0.0
- f5 big-ip advanced firewall manager12.1.0
- f5 big-ip application acceleration manager11.5.0
- f5 big-ip application acceleration manager11.5.1
Same product
f5: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-35995BIG-IP PEM vulnerability34Monitor
- CVE-2025-24497BIG-IP PEM vulnerability34Monitor
- CVE-2025-22891BIG-IP PEM Vulnerability34Monitor
- CVE-2018-5503On F5 BIG-IP versions 13.0.0 - 13.1.0.3 or 12.0.0 - 12.1.3.1, TMM may restart when processing a specifically crafted page through a virtual 31Monitor
- CVE-2024-23982BIG-IP PEM vulnerability30Monitor
- CVE-2020-5942In BIG-IP PEM versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, when proces30Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.securityfocus.com/bid/93325
- www.securitytracker.com/id/1036928
- support.f5.com/kb/en-us/solutions/public/k/35/sol35520031.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.