CVE-2026-5373
Privilege escalation in runZero Platform allows superuser promotion
Is CVE-2026-5373 being exploited?
Not confirmed. CVE-2026-5373 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 0.22% probability of exploitation in the next 30 days.
How severe is CVE-2026-5373?
CVE-2026-5373 is rated High with a CVSS score of 8.1. 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-2026-5373?
Yes. A fix has been recorded for CVE-2026-5373. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What should I do about CVE-2026-5373?
Apply patch to 4.0.260202.0 or newer
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Admin accounts can be elevated to superuser, gaining full control over runZero data and config; requires user interaction
Patch when possible
- affected< 4.0.260202.0
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.