CVE-2026-45556
RCE via crafted path in Roxy-WI LB UI
Is CVE-2026-45556 being exploited?
Not confirmed. CVE-2026-45556 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.37% probability of exploitation in the next 30 days.
How severe is CVE-2026-45556?
CVE-2026-45556 is rated Critical. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-45556?
Yes. A fix has been recorded for CVE-2026-45556. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-45556 affect?
CVE-2026-45556 affects Roxy-WI <= 8.2.6.4, HAProxy, Nginx, Apache httpd, and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-45556?
Upgrade to patched Roxy-WI when available; restrict UI access; monitor config changes.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Root RCE: attacker writes arbitrary file via config_path, cron entry dropped and executed as root on load balancers.
Immediate action required
- affected<= 8.2.6.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.