CVE-2026-27180
Unauthenticated RCE via poisoned update URL in MajorDoMo admin endpoint
Is CVE-2026-27180 being exploited?
Not confirmed. CVE-2026-27180 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 1.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-27180?
CVE-2026-27180 is rated Critical with a CVSS score of 9.3. 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-2026-27180?
Not known from our data. No patch reference has been recorded for CVE-2026-27180, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-27180 affect?
CVE-2026-27180 affects MajorDoMo (Major Domestic Module). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-27180?
Patch when available; enforce update auth; disable external updater feeds
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated RCE via poisoned updater; attacker deploys PHP webshells to webroot
Immediate action required
- affected<= *
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.