CVE-2026-63020
CVE CVE-2026-63020EUVD EUVD-2026-70135Published 2026-09-02T15:40:53.000ZLast changed 2026-09-02T17:55:45.000ZCVSS 2.3
What the advisory describes
A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages Impact: An attacker may trick authenticated BIG-IP users into accessing malicious links and reflect a spoofed error message in the victim's BIG-IP Configuration utility web browser session. This is a control plane issue; there is no data plane exposure. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- F5 — BIG-IP 17.5.0 <17.5.1.8; 17.1.0 <17.1.3.4; 21.1.0 <21.1.0.1; 21.0.0 <21.0.0.3
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- F5 — BIG-IP
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