How severe is CVE-2025-0896?

CVE-2025-0896 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-2025-0896 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-0896?

CVE-2025-0896 affects Orthanc-server Orthanc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-0896?

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-2025-0896 have an EU (EUVD) identifier?

Yes. CVE-2025-0896 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1914.

When was CVE-2025-0896 published?

CVE-2025-0896 was published on 2025-02-13 and last updated on 2026-06-17.

CVE-2025-0896

CVE-2025-0896 is a critical-severity vulnerability in Orthanc-server Orthanc 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.2
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-1914
Weakness: CWE-306
Affected product: Orthanc-server Orthanc
Published: 2025-02-13
Last modified: 2026-06-17

Description

Orthanc server prior to version 1.5.8 does not enable basic authentication by default when remote access is enabled. This could result in unauthorized access by an attacker.

Frequently asked questions

What is CVE-2025-0896?: Orthanc server prior to version 1.5.8 does not enable basic authentication by default when remote access is enabled. This could result in unauthorized access by an attacker.
How severe is CVE-2025-0896?: CVE-2025-0896 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-2025-0896 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-0896?: CVE-2025-0896 affects Orthanc-server Orthanc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-0896?: 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-2025-0896 have an EU (EUVD) identifier?: Yes. CVE-2025-0896 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1914.
When was CVE-2025-0896 published?: CVE-2025-0896 was published on 2025-02-13 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-medical-advisories/icsma-25-037-02

Affected products (1)

cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*

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