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CVE-2018-5540· NVD / CVE Program· CNA f5

On F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.3, 11.6.0-11.6.3.1, or 11.5.1-11.5.6, Enterprise Manager 3.1.1, BIG-IQ Centralized Management 5.0.

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.41% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

On F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.3, 11.6.0-11.6.3.1, 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.

MediumCVSS 4.4 · v3.0—No exploit No fix recorded
Published
Jul 19, 2018
Updated
Jun 16, 2026
EPSS
0.4% · 33th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2018-5540

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
f5big-ip domain name system
f5big-ip global traffic manager
f5enterprise manager
f5big-iq centralized management
f5big-iq cloud and orchestration
f5f5 iworkflow

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • f5 big-ip domain name system11.6.0 and later · up to 11.6.3.1 inclusive
  • f5 big-ip domain name system12.1.0 and later · up to 12.1.3.3 inclusive
  • f5 big-ip domain name system11.5.1 and later · up to 11.5.6 inclusive
  • f5 big-ip domain name system13.0.0 and later · up to 13.0.1 inclusive
  • f5 big-ip global traffic manager12.1.0 and later · up to 12.1.3.3 inclusive
  • f5 big-ip global traffic manager11.5.1 and later · up to 11.5.6 inclusive
  • f5 big-ip global traffic manager11.6.0 and later · up to 11.6.3.1 inclusive
  • f5 big-ip global traffic manager13.0.0 and later · up to 13.0.1 inclusive
  • f5 big-iq centralized management5.0.0 and later · up to 5.1.0 inclusive
  • f5 big-iq cloud and orchestration1.0.0
  • f5 enterprise manager3.1.1
  • f5 f5 iworkflow2.1.0 and later · up to 2.3.0 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (f5). Independent of NVD's CPE analysis and usually ahead of it.

  • F5 Networks, Inc. BIG-IP (DNS, GTM)

    • 13.0.0-13.0.1, 12.1.0-12.1.3.3, 11.6.0-11.6.3.1, 11.5.1-11.5.6affected

  • F5 Networks, Inc. BIG-IQ Centralized Management

    • 5.0.0-5.1.0affected

  • F5 Networks, Inc. BIG-IQ Cloud and Orchestration

    • 1.0.0affected

  • F5 Networks, Inc. Enterprise Manager

    • 3.1.1affected

  • F5 Networks, Inc. F5 iWorkflow

    • 2.1.0-2.3.0affected

Same product

f5: all records

Other highest-scoring records for the same primary product.

  • CVE-2015-8611BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, and PEM 12.0.0 before HF1 on the 2000, 4000, 5000, 7000, and 10000 platform
    40Plan
  • CVE-2023-28742BIG-IP iQuery mesh vulnerability
    35Monitor
  • CVE-2022-23013On BIG-IP DNS & GTM version 16.x before 16.1.0, 15.1.x before 15.1.4, 14.1.x before 14.1.4.4, and all versions of 13.1.x, 12.1.x, and 11.6.x
    35Monitor
  • CVE-2026-40061iControl REST and tmsh vulnerability
    34Monitor
  • CVE-2023-22839BIG-IP DNS profile vulnerability
    30Monitor
  • CVE-2022-41787BIG-IP DNS Express vulnerability CVE-2022-41787
    30Monitor

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.

EPSS, last 120 days

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 researchers

Finders, 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

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-732 · Incorrect Permission Assignment for Critical Resource

CVSS vector

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

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.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records