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

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 Technic

01What is this vulnerability?

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

02Affected products

Vendor	Product	Versions
F5	BIG	IP — 17.1.0, 16.1.0, 15.1.0, 14.1.0, 13.1.0

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2023-10-31. Ransomware use: Known.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-26T20:04:53.929Z
• Last modified: 2025-10-21T23:05:33.431Z
• Added to CISA KEV: 2023-10-31
• BOD 22-01 due: 2023-11-21

09References

• my.f5.com — https://my.f5.com/manage/s/article/K000137353
• packetstormsecurity.com — http://packetstormsecurity.com/files/175673/F5-BIG-IP-TMUI-AJP-Smuggling-Remote-…
• www.secpod.com — https://www.secpod.com/blog/f5-issues-warning-big-ip-vulnerability-used-in-activ…