Widely used Samba printing subsystem; remote code execution; could disrupt printing and server operations across many orgs.
CVE-2026-4480
Samba print subsystem RCE via unescaped shell in print command
Is CVE-2026-4480 being exploited?
Not confirmed. CVE-2026-4480 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 14% probability of exploitation in the next 30 days.
How severe is CVE-2026-4480?
CVE-2026-4480 is rated High with a CVSS score of 8.5. 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-2026-4480?
Yes. A fix has been recorded for CVE-2026-4480. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-4480 affect?
CVE-2026-4480 affects Samba Server (printing subsystem). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-4480?
Patch when available; restrict print access; monitor spooler activity
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via crafted print job description; attacker can execute arbitrary commands on the host
Patch when possible