What is CVE-2023-43746?

CVE-2023-43746 is a high-severity vulnerability in F5 Big-Ip, classified under Privilege Defined With Unsafe Actions. CVSS score: 8.7/10. Published 2023-10-10.

How severe is CVE-2023-43746?

High severity. CVSS v3 base score is 8.7 out of 10.

Is CVE-2023-43746 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Privilege escalation in F5 Big-Ip

CVE-2023-43746

When running in Appliance mode, an authenticated user assigned the Administrator role may be able to bypass Appliance mode restrictions, utilizing BIG-IP external monitor on a BIG-IP system. A successful exploit can allow the attacker to cross a security boundary. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Published 2023-10-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (45.0th percentile), scored 2026-11-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-267 — Privilege Defined With Unsafe Actions

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

my.f5.com/manage/s/article/K41072952 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-43746?: CVE-2023-43746 is a high-severity vulnerability in F5 Big-Ip, classified under Privilege Defined With Unsafe Actions. CVSS score: 8.7/10. Published 2023-10-10.
How severe is CVE-2023-43746?: High severity. CVSS v3 base score is 8.7 out of 10.
Is CVE-2023-43746 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.