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CISA KEV · ACTIVELY EXPLOITED
CRITICAL severity

CVE-2023-46747 — Big-Ip Access Policy Manager

CRITICAL

CVE-2023-46747 is a critical-severity (CVSS 9.8) CWE-288 vulnerability in f5 big-ip access policy manager. It is in CISA's Known Exploited Vulnerabilities catalog (added 2023-10-31) and has been used in ransomware campaigns — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

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…

Published
Updated
Affected
20 products
Patched
See advisory
Exploits
10 known
Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2023-10-31 — including use in ransomware campaigns. Federal agencies were required to remediate by 2023-11-21.
  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2023-46747.

EPSS Exploitation Probability

via FIRST.org ↗
96.5%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
93.8%94.9%96.0%97.1%94.4%96.5%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2023-46747 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

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

20 products · 100 configurations
Application
big-ip access policy managerf5
≥ 17.1.0 && ≤ 17.1.1
range
Application
big-ip advanced firewall managerf5
≥ 17.1.0 && ≤ 17.1.1
range
Application
big-ip advanced web application firewallf5
≥ 17.1.0 && ≤ 17.1.1
range
Application
big-ip analyticsf5
≥ 17.1.0 && ≤ 17.1.1
range
Application
big-ip application acceleration managerf5
≥ 17.1.0 && ≤ 17.1.1
range
Application
big-ip application security managerf5
≥ 17.1.0 && ≤ 17.1.1
range
Exploits & PoCs
10

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every f5 big-ip access policy manager deployment and check each version against the affected-products list above.

  2. Remediation status

    No patch has shipped for CVE-2023-46747 yet — track the f5 big-ip access policy manager advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

How to detect CVE-2023-46747

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2023-46747 -u https://target
Template
F5 BIG-IP - Unauthenticated RCE via AJP Smuggling
Severity
critical
Impact
Unauthenticated attackers can bypass authentication and achieve remote code execution on BIG-IP systems, potentially compromising critical network infrastructure.
Remediation
Apply F5's security patches immediately. Affected versions include BIG-IP 17.1.0, 16.1.0 - 16.1.4, 15.1.0 - 15.1.10, 14.1.0 - 14.1.5, and 13.1.0 - 13.1.5.

Template by ProjectDiscovery nuclei-templates (iamnoooob, rootxharsh, pdresearch), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

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
O3 Security · Runtime Protection

Is CVE-2023-46747 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

CVE-2023-46747: Big-Ip Access Policy Manager (KEV)