high severity August 04, 2026 · 2 min read

CISA ICS Advisory: Thermo Fisher Applied Biosystems Genetic Analyzers

Here’s what this advisory affects, and what to do about it.

Successful exploitation of this vulnerability could allow an attacker to modify .fsa/.hid output files, tampering with DNA data and resulting in inaccurate test results. The following versions of Thermo Fisher Applied Biosystems Genetic Analyzers are affected: Applied Biosystems 3500/3500xL Series Data Collection Software Applied Biosystems 3730/3730xL Series Data Collection Software Applied Biosystems SeqStudio Genetic Analyzer Data Collection Software Applied Biosystems SeqStudio Flex Series Instrument Software Applied Biosystems GeneMapper ID-X Software Applied Biosystems 3130 Series Data C

CISA ICS Advisory: Thermo Fisher Applied Biosystems Genetic Analyzers

CISA published an ICS medical device advisory on August 04, 2026, warning that multiple Thermo Fisher Applied Biosystems genetic analysis products contain a vulnerability that could allow an attacker to modify output files.

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Output file tampering in DNA analysis software

The advisory states that successful exploitation of the vulnerability could allow an attacker to modify .fsa and .hid output files. Such modification would tamper with the underlying DNA data and could produce inaccurate test results. The advisory does not say whether the flaw has been exploited in the wild.

Affected products

The following software is affected:

Applied Biosystems 3500/3500xL Series Data Collection Software
Applied Biosystems 3730/3730xL Series Data Collection Software
Applied Biosystems SeqStudio Genetic Analyzer Data Collection Software
Applied Biosystems SeqStudio Flex Series Instrument Software
Applied Biosystems GeneMapper ID-X Software
Applied Biosystems 3130 Series Data Collection Software

No additional versions or products are named in the advisory.

What to do

Determine whether any of the listed Applied Biosystems Data Collection Software or GeneMapper ID-X Software versions are in use on genetic analyzers in your organization.
Consult Thermo Fisher Scientific for available updates or mitigations specific to these products.
Apply vendor-provided patches or workarounds as soon as they become available.
Monitor Thermo Fisher’s official support channels for further guidance on this advisory.
Review and, where feasible, strengthen controls around the integrity and provenance of .fsa/.hid files generated by affected instruments.

Organizations operating these genetic analyzers should treat the advisory as an operational risk to forensic, medical, or research data integrity rather than a traditional information disclosure issue.

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Sources: CISA ICS Advisory

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