F5 BIG-IP up to 11.5.6/ big3d access control

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in F5 BIG-IP up to 11.5.6/ (Firewall Software). It has been rated as critical. Affected by this issue is an unknown code block of the component big3d. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

On F5 BIG-IP 13.0.0-13.0.1, 12.1.0-, 11.6.0-, or 11.5.1-11.5.6, Enterprise Manager 3.1.1, BIG-IQ Centralized Management 5.0.0-5.1.0, BIG-IQ Cloud and Orchestration 1.0.0, or F5 iWorkflow 2.1.0-2.3.0 the big3d process does not irrevocably minimize group privileges at start up.

The bug was discovered 07/19/2018. The weakness was shared 07/19/2018 (Website). The advisory is available at support.f5.com. This vulnerability is handled as CVE-2018-5540 since 01/12/2018. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 118700 (F5 Networks BIG-IP : big3d vulnerability (K82038789)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118700).


  • F5 BIG-IP up to 11.5.6/
  • F5 Enterprise Manager 3.1.1
  • F5 BIG-IQ Centralized Management up to 5.1.0
  • F5 BIG-IQ Cloud and Orchestration 1.0.0
  • F5 iWorkflow up to 2.3.0







CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
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NVD Base Score: 4.4
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Class: Access control
CWE: CWE-264

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍


Nessus ID: 118700
Nessus Name: F5 Networks BIG-IP : big3d vulnerability (K82038789)
Nessus File: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍


01/12/2018 🔍
07/18/2018 +187 days 🔍
07/19/2018 +0 days 🔍
07/19/2018 +0 days 🔍
07/19/2018 +0 days 🔍
07/19/2018 +0 days 🔍
07/20/2018 +1 days 🔍
11/02/2018 +105 days 🔍
04/25/2023 +1635 days 🔍


Vendor: f5.com

Advisory: K82038789
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5540 (🔍)
SecurityTracker: 1041340
SecurityFocus: 104920 - F5 BIG-IP big3d Process CVE-2018-5540 Local Privilege Escalation Vulnerability


Created: 07/20/2018 09:00 AM
Updated: 04/25/2023 06:41 AM
Changes: 07/20/2018 09:00 AM (67), 03/08/2020 08:45 PM (6), 04/25/2023 06:41 AM (5)
Complete: 🔍
Cache ID: 34:58E:40


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