CVE-2026-3100
ADM FTP Backup fails TLS cert verification, enabling MITM.
Is CVE-2026-3100 being exploited?
Not confirmed. CVE-2026-3100 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 0.18% probability of exploitation in the next 30 days.
How severe is CVE-2026-3100?
CVE-2026-3100 is rated High with a CVSS score of 8.3. 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-2026-3100?
Yes. A fix has been recorded for CVE-2026-3100. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-3100 affect?
CVE-2026-3100 affects ADM 4.1.0-4.3.3.ROF1, ADM 5.0.0-5.1.2.RE51. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-3100?
Upgrade firmware when available; enforce strict TLS verification.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can MITM FTPES/FTPS sessions to intercept, modify, or steal credentials and backups.
Immediate action required
- affected>= 4.1.0 and <= 4.3.3.ROF1
- affected>= 5.0.0 and <= 5.1.2.RE51
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.