---
title: "CVE-2023-46747: F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-46747/
description: "CVE-2023-46747 (F5 BIG-IP Configuration Utility): Exploited in the wild (CISA KEV). Undisclosed requests may bypass configuration utility authentication…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-10-26
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-46747"
kev: true
cvss: 9.8
epss: 0.96515
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-46747: F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run F5 BIG-IP Configuration Utility. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2023-10-31, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2023-11-21 ; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns .
- EPSS 96.5% , percentile 99.9: FIRST’s model estimates a 96.5% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

Undisclosed requests may bypass configuration utility authentication, allowing an attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

## Affected products (CVE record)

- F5 BIG-IP: 17.1.0 < *, 16.1.0 < *, 15.1.0 < *, 14.1.0 < *, 13.1.0 < *

## Severity

- f5 CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2023-10-31; federal due date 2023-11-21. Known ransomware use: Known.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 96.52% probability of exploitation activity in the next 30 days; percentile 99.9.

## Sources

- [my.f5.com](https://my.f5.com/manage/s/article/K000137353)
- [CVE.org record CVE-2023-46747](https://www.cve.org/CVERecord?id=CVE-2023-46747)
- [NVD entry CVE-2023-46747](https://nvd.nist.gov/vuln/detail/CVE-2023-46747)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-46747)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/175673/F5-BIG-IP-TMUI-AJP-Smuggling-Remote-Command-Execution.html)
- [secpod.com](https://www.secpod.com/blog/f5-issues-warning-big-ip-vulnerability-used-in-active-exploit-chain/)

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Source page: https://erroneo.us/security/cve/CVE-2023-46747/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt