CVE-2026-20160
Unauthenticated attacker can execute root commands via exposed SSM On-Prem API.
Is CVE-2026-20160 being exploited?
Not confirmed. CVE-2026-20160 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 0.91% probability of exploitation in the next 30 days.
How severe is CVE-2026-20160?
CVE-2026-20160 is rated Critical with a CVSS score of 9.8. 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-2026-20160?
Yes. A fix has been recorded for CVE-2026-20160. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-20160 affect?
CVE-2026-20160 affects Cisco Smart Software Manager On-Prem (SSM On-Prem). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-20160?
Patch when available; restrict API exposure; monitor access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote RCE to root on SSM On-Prem host via crafted request to exposed internal API.
Patch when possible
- affected9-202502
- affected9-202504
- affected9-202507
- affected9-202510
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.