How severe is CVE-2025-53963?

CVE-2025-53963 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-53963 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-53963?

CVE-2025-53963 affects Thermofisher Ion Torrent Onetouch 2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-53963?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-53963 have an EU (EUVD) identifier?

Yes. CVE-2025-53963 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201181.

When was CVE-2025-53963 published?

CVE-2025-53963 was published on 2025-12-04 and last updated on 2026-06-17.

CVE-2025-53963

CVE-2025-53963 is a critical-severity vulnerability in Thermofisher Ion Torrent Onetouch 2 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-521.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201181
Weakness: CWE-521
Affected product: Thermofisher Ion Torrent Onetouch 2 Firmware
Published: 2025-12-04
Last modified: 2026-06-17

Description

An issue was discovered on Thermo Fisher Ion Torrent OneTouch 2 INS1005527 devices. They run an SSH server accessible over the default port 22. The root account has a weak default password of ionadmin, and a password change policy for the root account is not enforced. Thus, an attacker with network connectivity can achieve root code execution. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Frequently asked questions

What is CVE-2025-53963?: An issue was discovered on Thermo Fisher Ion Torrent OneTouch 2 INS1005527 devices. They run an SSH server accessible over the default port 22. The root account has a weak default password of ionadmin, and a password change policy for the root account is not enforced. Thus, an attacker with network connectivity can achieve root code execution. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
How severe is CVE-2025-53963?: CVE-2025-53963 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-53963 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-53963?: CVE-2025-53963 affects Thermofisher Ion Torrent Onetouch 2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-53963?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-53963 have an EU (EUVD) identifier?: Yes. CVE-2025-53963 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201181.
When was CVE-2025-53963 published?: CVE-2025-53963 was published on 2025-12-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:thermofisher:ion_torrent_onetouch_2_firmware:-:*:*:*:*:*:*:*

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