Affects widely deployed OT/HMI suites (GENESIS, ICONICS) enabling remote bypass of password recovery; can disrupt industrial operations across multiple sectors.
CVE-2026-16436
Fixed challenge-response lets attackers bypass password recovery in Mitsubishi GENESIS/ICONICS.
Is CVE-2026-16436 being exploited?
Not confirmed. CVE-2026-16436 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 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-16436?
CVE-2026-16436 is rated Critical with a CVSS score of 9.2. 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-2026-16436?
Yes. A fix has been recorded for CVE-2026-16436. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-16436 affect?
CVE-2026-16436 affects Mitsubishi Electric GENESIS <= 11.03, GENESIS64 <= 10.97.3, ICONICS Suite <= 10.97.3, Hyper Historian <= 10.97.3, and 6 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-16436?
Install vendor fixed versions immediately; isolate OT/HMI from untrusted networks; audit/reset credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can unlock accounts via fixed challenge-response, enabling data disclosure, tampering, deletion, or DoS of OT/HMI systems.
Immediate action required
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedall versions
- affectedall versions
- affectedversions 11.03 and prior
- affectedversions 11.03 and prior
- affectedall versions
- affectedall versions
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
- affectedall versions
- affectedversions 10.97.3 and prior
- affectedversions 10.97.3 and prior
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.