Exploited CVEs / F5 / CVE-2023-46747

CVE-2023-46747

F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted, and the vulnerability is known to be used in ransomware campaigns. Federal agencies were required to remediate by 2023-11-21 (that deadline has passed); treat that date as the outer bound for your own environment. Check the vendor security advisory for the fix.

Risk summary

CriticalCISA KEVRansomware

9.8

CVSS base

97%

EPSS exploit probability

Critical

Severity

2023-10-31

Added to KEV

2023-11-21 (past due)

CISA due date

Actively exploited F5 BIG-IP Configuration Utility vulnerability, Critical severity, CVSS 9.8. Added to the CISA KEV catalog 2023-10-31.

Senserva AI read on CVE-2023-46747 CISA required action Official fix for CVE-2023-46747 Admin questions #99 hottest CVE right now

Senserva AI Opinion for CVE-2023-46747

An unauthenticated attacker who can reach a BIG-IP management port or self IP can bypass authentication outright on the Configuration Utility, and with 97% EPSS, Critical Severity (CVSS 9.8), and known ransomware use, attackers are actively doing so. BIG-IP devices terminate and steer traffic for the applications behind them, so owning one means owning the traffic. CISA listed it in October 2023, typically chained with the SQL injection flaw disclosed the same day.

Do this: Patch all BIG-IP devices today and audit for new administrative users or configuration changes made through the management plane.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2023-46747

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I run IT security. Facts for CVE-2023-46747, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2023-46747.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2023-46747: F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability
- Affected: F5 BIG-IP Configuration Utility
- Severity: Critical, CVSS 9.8; EPSS 30-day exploitation probability 97%
- Added to CISA KEV: 2023-10-31; federal remediation due 2023-11-21
- Ransomware-linked: YES
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch immediately

Exploited in the wild and used in ransomware campaigns.

No vendor fix is mapped yet. This page refreshes daily and will name the patch the day one is published.

Do this now: Move this ahead of everything else in the queue, then verify the fix actually landed on every exposed device.

Updated August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Full tracking and change history for CVE-2023-46747

Published: 2023-10-31
Last revised: 2023-10-31
Changes tracked: 1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

Senserva Watchevery change we have recorded for this one

What changed, and when

2023-10-31 added to the CISA KEV catalog by CISA
2026-07-17 CVSS 0.0 to 9.8; EPSS first scored at 96.5%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

CISA required action

Federal (BOD 22-01) remediation due date: 2023-11-21 (past due).

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Official fix for CVE-2023-46747

Check the vendor's security advisory channel for the patched BIG-IP Configuration Utility versions and workarounds.

CISA KEV entry

Common questions about CVE-2023-46747

Is CVE-2023-46747 actively exploited?

Yes. CVE-2023-46747 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2023-10-31, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 97%. CISA also reports it is known to be used in ransomware campaigns.

What is the CISA deadline and required action for CVE-2023-46747?

CISA set the federal (BOD 22-01) remediation due date at 2023-11-21, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What fixes CVE-2023-46747?

Check the vendor's security advisory for the patched BIG-IP Configuration Utility versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2023-46747?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2023-46747's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).

Scope and sources

More exploited F5 CVEs: CVE-2025-53521 CVE-2023-46748 CVE-2022-1388 CVE-2021-22991 CVE-2020-5902 CVE-2021-22986
All F5 exploited CVEs on one page: F5 vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog FIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.