CVE-2026-66842CWE-918ssrf

CVE-2026-66842

High · published September 2, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
39.6
In the wild
Unconfirmed
What it is

BIG-IP has a vulnerability where an authenticated user of any role may be able to create administrative user accounts through an undisclosed request to Traffic Management User Interface (TMUI).

Impact:

This vulnerability may allow an authenticated attacker with network access to the BIG-IP management interface to escalate privileges by creating administrative accounts on the BIG-IP system. There is no data plane exposure; this is a control plane issue only.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00468 · 39.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-02T20:17Z
References (1)
EPSS history
Timeline
  • 04 SEP 03:43Z
    EPSS moved — → 0%
    epss
  • 02 SEP 15:40Z
    BIG-IP and BIG-IQ Configuration utility vulnerability
    cvelistv5